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.

[EX Q]: Article: It was late one evening. I can't remember what it was about, but my dad and I had a very big argument when my mom was away. We both said things we didn't mean, and in the end I said, "I'm leaving." And he said, "Good. The sooner, the better." I threw a few things in a suitcase and closed the door angrily behind me, not knowing where I was going. After walking aimlessly for about 20 minutes, I stopped at a local supermarket. Then my phone rang. It was my mom calling. She said, "Hey, Mary. Where are you? Dad is worried about you." "How can he worry about me? I've been away for nearly half an hour, but he didn't call," I said with annoyance . My anger returned and I remembered all the hateful things he'd shouted to me. "Listen, Mom. You can tell Dad that I'm fine. I'll call you tomorrow," I said and hung up. I walked around the store, trying to get my thoughts together. By the time I paid for my _ , it had been much later than I used to be out alone. When I left the supermarket, a large piece of white paper was in front of me. On the piece of white paper were these words: "Please come home! I miss you and I'm worried about you!" Then a car pulled up beside me. Hanging out of the window was my dad. Beside him, smiling gently, sat my mom. And that's when I started laughing. I laughed so hard that I cried. Despite my best efforts to run away from home, my father finally managed to track me down. I couldn't leave now, not with him sitting there with caring eyes.
Question: Hearing Mary decided to leave home, Mary's father was very _ .
Options: (A) worried (B) angry (C) nervous (D) surprised
[EX A]: B

[EX Q]: Article: Could cities that float on the sea solve the problems caused by floods and provide food for the world? Some scientists think so. The idea is already being tested and they believe that floating citied will provide more homes for a growing population, without having to use land needed to grow food. And they believe floating areas will allow more food to be grown, so that no one in the world is hungry. In some places, cities that float on the sea are already being planned, A company in the Netherlands called DeltaSync thinks that sea cities will save the world, with more than one in ten people living in them. They say sea cities solve many of the problems the world faces in the 21st century, like not having enough land , more and more people needing homes, fossil fuels running low and the increasingly serious problems caused by floods. DeltaSync says building in the desert is not possible because there is no enough water and that developing ways for people to live in space is still too expensive. So they believe the answer is our oceans, which cover over two thirds of the Earth's surface. Their plans for floating areas include using algae to produce fuel and food. More than a quarter of the land in the Netherlands already lies underwater and scientists there have spent years trying to find ways to deal with it. In the city of Rotterdam they already have floating homes. Bart Roeffen from DeltaSync says: "We have plans for neighbourhoods including roads and, in the end, I believe we can build floating cities on the sea."
Question: DeltaSync is a company that wants to build cities _ .
Options: (A) on land (B) in space (C) on the sea (D) in the desert
[EX A]: C

[EX Q]: Article: I grew up with a fat dad--450 pounds at his heaviest.Every week he would try a new diet,and my family ended up eating whatever strange food he was trying at that moment. After my thirdgrade year,my dad landed a lifechanging job in Manhattan.My mom,my little sister and I had to move away from our hometown,Chicago,and leave my grandmother and her beautiful food behind. Leaving my grandmother was far more frightening than the move to New York City.There would be no more special weekends at my grandmother's house,the only place I can remember feeling happy,safe and nourished .It was what I desired.In this new city,I felt extremely alone and lost,and I missed my grandmother terribly. My grandmother knew just how I felt--And she knew the _ .Every week,she would send me a card with a $20 bill,a recipe and a list of what to buy at the market.It kept us bonded,and her recipes filled my body and soul. Over the years,I have grown to better understand my father's struggles with weight and the toll it took on him and those who love him.I have come to realize he was driven not by vanity or selfishness as much as by a deep pain.And in spite of growing up in such an unhealthy eating environment (or perhaps because of it),as an adult I found a passion and a career as a nutrition consultant. Today,my father weighs 220 pounds and is a vegan .How he got there is a story I hope to share in the coming weeks.More importantly,food is no longer a barrier that keeps us apart,but a bridge that keep us connected.There is nothing my dad enjoys more than talking with me about dietary theories and his weightloss victories.And now I am the one regularly sending recipe cards to my father's house,just as my grandmother did for me.
Question: What kind of person was actually the author's father?
Options: (A) He was a man of vanity and selfishness. (B) He didn't like to eat with his family. (C) He was more painful than selfish. (D) He forced his family to eat what he liked.
[EX A]:
C