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 Input:
Article: This is a true story that happened in Japan. In order to _ the house, a Japanese tore open the walls. Japanese houses normally have a empty space between the wooden walls. When tearing down the walls, he found that there was a lizard stuck there because a nail from outside was hammered into one of its feet. He saw this, feeling pity and curious. When he checked the nail, he found it was nailed 10 years ago when the house was first built. What happened? The lizard had survived in such a position for 10 years! It has been in a dark wall partition for 10 years without moving! Then he wondered how this lizard survived for 10 years without moving a single step--since its foot was nailed! So he stopped his work and observed the lizard: What has it been doing? What and how has it been eating? Later, he didn't know from where another lizard appeared, with food in its mouth. Ah! He was astonished and touched deeply. The free lizard had been feeding the stuck one for the past 10 years. Such love, a beautiful love! Such love happened with this tiny creature... What can love do? It can do wonders! Just think about it: one lizard had been feeding the other one untiringly for 10 long years, without giving up hope on its partner. If a small creature like a lizard can love like this, just imagine how we can love if we try.
Question: How did the Japanese feel when seeing the stuck lizard?
Options: (A) Frightened (B) Enjoyable (C) Confused (D) Usual

Ex Output:
C

Ex Input:
Article: They tell us when to get up or when we're running late for work and whether we are in danger of missing our favourite TV programme. But while our daily routines rely on clocks that tell us the time, science is discovering that our well-being is influenced by a very different kind of timepiece. Circadian rhythms---the human body's own internal clock---have a powerful influence on our health and behaviour. _ are programmed from birth and control functions ranging from temperature and blood pressure to sleep patterns. In recent years researchers have also discovered that this built-in mechanism can influence everything from the way we react to medicines to how well we learn music. The latest example, from experts at Harvard University in the US, shows that the human body clock can even dictate whether or not we are likely to tell the truth. Researchers found it was easier for people to fib in the afternoon because, as they were tired, the self control that would normally prevent them from lying started to break down. Tiredness made it harder to resist the temptation to tell lies---especially if it meant they got a financial reward at the end. "The body clock has a great effect on us all," says Professor Jim Horne from the Sleep Research Centre at Loughborough University. "Most people tend to feel good around late morning and then decline in the early afternoon. But the time most of us will feel our sharpest is between 6pm and 8pm. That's because sleepiness tends to build up throughout the day. By early evening our body clock kicks in to wake us up. One reason may be to ensure we get home safely. When our ancestors were coming home after hunting all day their internal clocks kicked in to get them home in one piece." So what effects do circadian rhythms have and what's the best time of day to take advantage of them?
Question: According to the passage, when are people most quick-thinking?
Options: (A) In the morning. (B) Around midday. (C) In the late afternoon. (D) In the early evening.

Ex Output:
D

Ex Input:
Article: Trans-Bridge Tours is looking forward to providing you with another year of exciting One-Day travel destinations in 2016. Statue of Liberty & Ellis Island August 15 (Sat) $78 Adult; $66 Child (4-12); $ 75 Senior (62+) No visit to the New York City area is complete without a trip to the world's most famous landmarks--- the Statue of Liberty and Ellis Island. Price includes transportation to Liberty State Park and timed ferry tickets. 9/11 Museum& Memorial September 29 (Tue) $ 87 Adult; $ 78 Youth (7-17); Senior $80(65+) The Museum displays artifacts associated with the events of 9/11, while presenting stories of loss and recovery. The Memorial between the twin reflecting pools, is a tribute of remembrance and honor to the nearly 3,000 people killed in the terror attacks. The New York Botanical Garden October 14 (Wed) $126 Adult This National Historic Landmark offers visitors 250 acres of the most unique land form of any botanical garden in the world, with huge rock outcroppings, beautiful flower collections, a river, cascading waterfalls, and 40 acres of old-growth forest dating from pre-Revolutionary times plus a world-class Conservatory. Hagley Museum & Winterthur November 21(Sat) $113 Adult Located on 235 acres along the banks of the Brandywine, Hagley is the site of the gunpowder works founded by E.I. du Pont in 1802. Winterthur was the former home of Henry Francis du Pont, a famous antiques collector and gardener. Includes: Brandywine tour at Hagley; Lunch at Hagley Museum; Guided tour at Winterthur Garden
Question: Which of the following charges an adult the lowest fee?
Options: (A) Statue of Liberty & Ellis Island (B) 9/11 Museum & Memorial (C) The New York Botanical Garden (D) Hagley Museum & Winterthur

Ex Output:
A