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: Surface Exploration. Robots make great explorers on planets,moons,and other landing areas. Aside from earth,just about every surface in the solar system is unsafe for humans to explore. The air on most other planets is insufficient for humans to breathe,making it necessary to wear a space suit and oxygen equipment. The temperatures on these surfaces are much too hot or much too cold for any humans to withstand .Plus there would be complications with radiation,weather,and a lack of gravity. Robots have much less limitation in these areas and can survive much longer under these conditions. Data Collection. Robots are designed for collecting scientific data. Robots are also able to perform many tasks at a time and can process information much quicker and more efficiently. Important scientific projects from detecting minerals,analyzing ground samples,and finding water are all performed much quicker and more accurately by robots. Cost Effective. The use of robots has made the cost of space exploration much less expensive than it would cost for humans to do the work. In order to successfully send humans into space we would need to build a vehicle that can not only carry humans,but also enough food and water to keep them alive for the duration of the trip. Moreover,robots have no problems working for hours on end. Robots never complain,they don't require food or water,and they never need a bathroom break. Space Travel. Over the past 30 years or so there have been many different types of robots used successfully in the exploration of space. Perhaps the most famous and successful robots are the Spirit and Opportunity who have both been exploring the surface of Mars. They have both been very successful with experiments on soil and rocks and have even found evidence of water in Mars' history.
Question: According to the passage,which of the following is NOT true?
Options: (A) The use of robots in space exploration costs more than the use of humans. (B) It may be dangerous for humans to explore the solar system except the earth. (C) Both the Spirit and Opportunity have found the evidence of water in the Mars. (D) Many different types of robots have explored the space successfully.
Example Output: A

Example Input: Article: Of all the famous English writers, probably the best known is William Shakespeare. He was born in Stratford-upon-Avon in 1564 on April the 23rd. His father was an important man in town so Shakespeare had a good upbringing. Shakespeare probably went to school (although no records survive to prove this) but not university. He got married when he was 18 to Anne Hathaway and the couple had 3 children. Shakespeare wrote 38 plays and 154 sonnets (a sonnet is a kind of poem). He began working in his home town of Stratford but by 1592 was writing in London. He became rich enough to buy a house in the capital and one in Stratford. He wrote sad stories called tragedies, like Romeo and Juliet, funny stories or comedies, romantic stories and stories about historical figures such as Julius Caesar. Shakespeare died on his birthday in 1616, almost 400 years ago. But why is his work still popular today? His work looked at common human themes, such as betrayal, murder, lust, power, ambition and love. These themes are as much a part of human nature today as they were all those years ago and are the themes we see in modern soap operas and Hollywood films. Even though his theatre, The Globe, burned down in 1613 it was rebuilt in London in 1997 and you can still see his plays performed there today. Shakespeare's influence on the English language can still be felt today. We talk about "fair play", meaning honest behaviour but this phrase was first used by Shakespeare. He coined the phrase "you can have too much of a good thing". And it was Shakespeare who came up with the expression to disappear "into thin air" which we still use today when we lose something. Shakespeare's work has been translated into every major language in the world. And perhaps we'll still be as fascinated by his work 400 years from now as we've been for the last 400.
Question: How old was Shakespeare when he died?
Options: (A) 18. (B) 28. (C) 49. (D) 52.
Example Output: D

Example Input: Article: Every year, a handful of new words enter the world's collective vocabulary, but only one has the honor of being named Oxford Dictionaries' Word of the Year. And this year's top honor goes to "selfie". The frequency of the word selfie used in the English language has increased by 17,000 per cent since this time last year. This figure is calculated by Oxford Dictionaries using a research program which collects around 150 million English words currently in use from around the web every month. To qualify, a word need not have been invented within the past 12 months but it does need to stand out or become notable at that time. Selfie is defined by Oxford Dictionaries as: "A photograph that one has taken of oneself, typically one taken with a smart phone or webcam and uploaded to a social media website." Oxford Dictionaries said the earliest known usage is an Australian online forum post in 2002. A man posted a picture of injuries to his face when he tripped over some steps. He apologized for the fact that the picture was out of focus, saying that it was not because he was drunk but because it was a selfie. Judy Pearsall, editorial director for Oxford Dictionaries, said: "Using the Oxford Dictionaries language research program, we can see a phenomenal upward trend in the use of selfie in 2013, and this helped to win its selection as Word of the Year." She also added: "Social media sites helped to popularize the term, with selfie appearing on the photo-sharing website Flicker as early as 2004, but usage wasn't widespread until around 2012, when selfie was being used commonly in mainstream media sources." Selfies have taken the world by storm. Everyone from the first family to ordinary people has taken the time to pose for a selfie. Celebrities like Miley Cyrus, Jennifer Lawrence, and Jennifer Aniston have all showed their new haircuts with selfies this year. Selfie was added to the Oxford Dictionaries online in August, but not yet in the Oxford English.
Question: What does this passage mainly talk about?
Options: (A) The definition of the word "Selfie". (B) The widespread usage of the word "Selfie" in 2012. (C) "Selfie" has been chosen as the Word of the Year of 2013. (D) "Selfie" began to be used in the Oxford English.
Example Output:
C