In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

[Q]: Article: Every year on my birthday, from the time I turned 12, a white gardenia was delivered _ to me at my house. No card or note came with it. Calls to the florist were always in vain ---- it was a cash purchase. After a while I stopped trying to discover the sender's identity. But I never stopped imagining who the anonymous sender might be. My mother often contributed to these imaginings. She'd ask me if there was someone for whom I had done a special kindness who might be showing appreciation. Perhaps the neighbor I'd help when she was unloading a car full of groceries. Or maybe it was the old man across the street whose mail I retrieved during the winter so he wouldn't have to venture down his icy steps. When I was 17, a boy broke my heart. The night he called for me the last time, I cried myself to sleep. When I awoke in the morning, there was a message scribbled on my mirror in red lipstick: "Heartily know, when half-gods go, the gods arrive." I thought about that quotation from Emerson for a long time, and I left it where my mother had written it. When I finally went to get the glass cleaner, my mother knew everything was all right again. I don't remember ever slamming my door in anger at her and shouting, "You just don't understand!" because she did understand. One month before my high-school graduation, my father died suddenly of a heart attack. My feelings ranged from grief to abandonment, fear and over-whelming anger that my dad was missing some of the most important events in my life. I became completely uninterested in my upcoming graduation, the senior-class play and the prom-events that I had worked on and looked forward to. But my mother, in the midst of her own grief, would not hear of my missing out any of those things. The day before my father died, she and I had gone shopping for a prom dress and found a spectacular one. Wearing it made me feel like a princess, but it was the wrong size, and when my father died the next day, I forgot all about the dress. My mother didn't. The day before the prom, I found that dress-in the right size, draped over the living room sofa, presented to me -- beautifully, artistically and lovingly. I didn't care about having a new dress, but my mother did. She wanted her children to feel loved and lovable, creative and imaginative. My mother died when I was 22, only ten days after I was married. That was the year the gardenias stopped coming.
Question: Why did Mother try to arouse the author's imagination about the gardenia sender?
Options: (A) Because she wanted her child to feel cherished and loved not just by her but by the world. (B) Because she had a great curiosity like a child. (C) Because she was romantic and she once experienced such the same thing at her young age. (D) Because she wanted to give her child some tips about the gardenia sender.
[A]: A

[Q]: Article: My son Paul got a job in a large chain of guitar stores. It was the first time for him to do such a job. The pay was based on a small salary and his sales. They offered him some training on how to get close to a customer, introduce the product and make the sale. However, he wasn't doing well. He was very _ . One morning Paul said to me, "Mum, you used to be a sales trainer. Can you tell me why I'm not doing well?" I said, "The key is that you must love the people you are selling your product to, not count the money you will make in your mind. Do what is best for them even though they are just buying something small or a cheap guitar." He promised he would try it. After some time, his sales began to increase. He became the top salesman in the store and his salary was increased. Within six months, he was one of the top ten salespeople in the whole chains of guitar stores around the country. His company held a big party to honor the top ten salespeople. New cars, great hotels and delicious dinners were the prizes. Paul was of course included. After the dinner, the boss of the company asked, "Paul, how did you make it?" Paul answered, " I don't want to tell you. You won't believe me." "Of course I'll believe you. Tell me." "I started loving the people who came in," Paul told him. The boss replied, "Okay Paul, now tell me how you REALLY make it."
Question: His mother suggested that Paul should _ .
Options: (A) always introduce the cheap guitars to customers (B) show love and respect to his customers (C) work out how much he would make before each sale (D) learn from the top ten salespeople in his company
[A]: B

[Q]: Article: Grasslands need time to rest when cattle and other animals feed on them. Moving animals from one area of pasture to another can provide the time needed for new growth. This is called rotational grazing . Rotational grazing is good for the land and the animals, and it can save money. This form of grazing can reduce the need for pesticide treatments by reducing the growth of weeds. And it can limit the need for chemical fertilizers by letting animal wastes do the job of natural fertilizer. Rotational grazing can even help prevent wildfires by keeping grasslands in good condition. Letting animals feed continually and intensively in the same grazing areas can require costly replanting. Animals eat the most desirable growth first. When that keeps happening, the roots do not have enough time to recover. As a result, less desirable plants may replace them. Intensively used grasslands are also harmed as the soil is continually crushed under the weight of heavy animals. While rotational grazing can save money over time, it also requires planning. And that starts with a good map to mark fences, water supplies and grazing areas. Changing methods of grazing also requires time. Farmers may want to put up electric fences to enclose grazing areas, called paddocks. The paddocks will need water. Some farmers design a path for animals from different paddocks to drink from a common watering place. Farmers can start rotational grazing by removing animals from a pasture when the grass is eaten to less that five centimeters. The pasture is then kept empty until the grass grows to more than fifteen centimeters high. Sheep and goats may require special preparations. They may need stronger fences than other animals. And while they eat the grass, they may need guard animals to protect them from animals that would like to eat them.
Question: Grasslands won't depend on chemical fertilizers when _ .
Options: (A) the soil of grasslands is naturally rich (B) animal wastes serve as natural fertilizer (C) rotational grazing can prevent wildfires (D) grasslands are usually in good condition
[A]:
B