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.

Example Input: Article: As the nights get lounger, those who suffer from the winter blues will be planning ways to escape to the sunshine. But there may be a much simpler way of cheering yourself up... simply shining a bright light into your ear canal. Up to one in four Britons suffer from seasonal affective disorder, with seven per cent of the population having full-blown SAD. It is caused by the brain not receiving enough daylight which is needed to trigger serotonin , a hormone that regulates mood. Symptoms range from mild lethargy to depression and insomnia, but a cure might be in sight. Two clinical trials, run by Valkee - who make a device that can shine light into your ear - and the University of Oulu in Finland, have found that carefully targeted light can help prevent the condition. Juuso Nissila, Valkee's co-founder and chief scientist said: "We presented earlier that the human brain is sensitive to light". "These two clinical trials demonstrate that channeling bright light via ear canal into brain's photosensitive areas effectively prevents and treats seasonal affective disorder." The University of Oulu reported that in their first study, 92 per cent of the patients with seasonal affective disorder achieved full remission after a month of daily eight-to-12 minute doses of light from the Valkee. Time Takala, chief physician at the Oulu Deaconess Institute said: "These two trials show that bright light channeled into the brain via ear canal is an important future method to treat seasonal affective disorder." Valkee launched its bright light headset in August 2010. It is classed as a medical device under EU regulations. The device channels bright light direct to the brain via the ear canal to prevent and cure depression, mood swings and even circadian-rhythm disorders such as jet lag. It costs PS185 and looks like an iPod - only the earphones emit light rather than sound.
Question: How many Britons suffer from seasonal affective disorder?
Options: (A) Approximately a quarter. (B) 7%. (C) More than one fourth. (D) 92%.
Example Output: A

Example Input: Article: It's good to make mistakes,and here is why. First of all,mistakes are a clear sign that you are trying new things. It's always good to try new things because when you are trying new things you are growing. If you never try anything new,how can you improve?How can you expand?The simple answer is"You can't."Look around you. With very few exceptions,either every-thing you see in your world or every single detail of every single thing is the result of someone trying something new. Another good thing about mistakes is this:When you are making mistakes,you are learning.Consider this:Edison failed 10,000 times before he perfected the 1ight bulb.When asked how it felt to fail that many times,he said that he hadn't failed 10,000 times,but rather had learned 10,000 things that didn't work. Finally,when you make a mistake you are much closer to success.Why?Because when all is said and done,you will have tried some numbers of things before you succeed.Every time you make a mistake you eliminate one of those things and are one step closer.But this all doesn't mean that you should go ahead without considering the consequences of a mistake.Quite the contrary,when you try something new you have to be willing to set some reasonable limits so that in the event that it doesn't work out the way you want it to,you will he in a position to try again. We all have limited time and money so don't blow them all on one approach to a problem.Realize that it probably won't be perfect the first time and allocate these resources properly so you can learn,make corrections,and try it again.If you accept and use your mistakes in this way,you can make great progress in your business and your career. There is an old saying that goes,"If you're not making mistakes,you're not trying hard enough."So go ahead and make mistakes.And learn.And grow.And succeed.
Question: According to the article,one thing you should pay attention to about making mistakes is _ .
Options: (A) avoiding making the same mistakes (B) accepting the punishment willingly (C) taking consequences into consideration1] (D) trying things out one by one
Example Output: C

Example Input: Article: In spring, you may have seen white foam on a green tree or other plants. As a matter of fact, the foam is where young spittlebugs live. These insects are protected by the foam, and they usually don't do much harm to the plants. As we all know, in late summer, a mother spittlebug lays her eggs on the plant. The babies will hatch in spring. After they come to the new world, they begin to eat juice from the plant. The babies eat more juice than their bodies need for food. The extra juice mixes with a special waste that the spittlebugs produce. When this fluid is released, it mixes with the air, forming bubbly foam. What is so great about having a foam home? The space inside is so wet that it can keep the bugs' soft bodies from drying out. And the foam tastes bad, so it keeps away most animals that would eat the bugs. Some birds will reach their heads through the foam to find the bugs. Wasps and ants might eat them, too. But most of the bugs stay safe inside the foam. Once the bugs have grown into adults, they stop making foam. They leave their homes and jump from plant to plant in search of food. The adults look a little like tiny frogs. For this reason they are also called froghoppers. If you see some foam on a plant, you might want to take a careful look inside. Gently push some of the foam aside with a small stick. Deep inside you may see a few insects eating plant juice. They might also be making more foam. Be sure to push the foam back after a moment to cover the insects and keep them safe. Soon the spittlebugs will grow up and leave their foam home. They will join the other insects in the grassland.
Question: The eggs of spittlebugs _ .
Options: (A) are laid in late spring (B) have to pull through a winter before they hatch (C) are protected by mother spittlebugs all the time (D) will be eaten by ants
Example Output:
B