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.

Input: Consider Input: Article: Handshaking, though a European practise is often seen in big cities of China. Nobody knows exactly when the practice started in Europe. It is said that long long ago in Europe when people met, they showed their unarmed hands to each other as a sign of goodwill. As time went on and trade in cities grew rapidly, people in cities began to clap each other's hands to make a deal or to reach an agreement. This practice was later changed into shaking hands among friends on meeting or leaving each other. "Let's shake (hands) on it" sometimes means agreement reached. Do the Europeans shake hands wherever they go and with whomever they meet? No. Sometimes the Chinese abroad reach out their hands too often to be polite. It is really very impolite to give your hand when the other party, especially when it is a woman, shows little interest in shaking hands with you and when the meeting does not mean anything to him or-her. Even if, for politeness, he holds out his unwilling hand in answer to your uninvited hand, just touch it slightly- There is generally a misunderstanding among the Chinese that westerners are usually open and straighforward, while the Chinese are rather reserved in manner. But in fact some people in western countries more reserved than some Chinese today. So it is a good idea to shake hands with a westerner only when he shows interest in further relations with you.
Question: In the old days in Europe, people put out their unarmed hands to each other _ .
Options: (A) to make a deal (B) to greet each other (C) to show friendliness (D) to reach an agreement

Output: C

Input: Consider Input: Article: Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity . In very cold climates, there is a constant danger of developing hypothermia , which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0degC. However, differences in persons and even the time of day can cause it to be as much as 6degC higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4degC. Below 29.4degC, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9-15.6degC. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7degC. In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6-41.7degC. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.
Question: Why can humans keep stable body temperatures in different seasons?
Options: (A) Because their bodies are unusually efficient. (B) Because they experience different climates. (C) Because they can adjust to cultural patterns and technologies. (D) Because they have internal temperature regulating systems.

Output: D

Input: Consider Input: Article: An old farmer lived on a farm with his young grandson. Each morning Grandpa was up early to read his Bhagavat Geeta. His grandson wanted to be just like him and tried to imitate him in every way he could. One day the grandson asked, "Grandpa! I try to read the Bhagavat Geeta just like you but I don't understand it, What good does reading the Bhagavat Geeta do?" The Grandfather quietly turned from putting coal in the stove and replied, "Take this coal basket down to the river and bring me back a basket of water." The boy did as he was told, but all the water leaked out before he got back to the house. The grandfather laughed and said, "You'll have to move a little faster next time," and sent him back to the river with the basket to try again. This time the boy ran faster, but again the same took place. He told his grandfather that it was impossible to carry water with a basket. The old man said, " You're just not trying hard enough," So the boy again dipped the basket into the river and ran hard, but when he reached his grandfather the basket was again empty. he said, "See Grandpa, it's useless!" "So you think it is useless?" The old man said, "Look at the basket." The boy looked at the basket and for the first time realized that the basket was different. It had been transformed from a dirty old coal basket into a clean one inside and outside. "You might not understand or remember everything, but when you read it, you will be changed, inside and out. That is the work of Krishna in our lives."
Question: According to the grandson, _ .
Options: (A) he enjoyed reading the Bhagavat Geeta (B) learning the Bhagavat Geeta was easy (C) he was not good at remembering anything (D) reading the Bhagavat Geeta was meaningless
Output: D