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: 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.

Ex Output:
A

Ex Input:
Article: Do you start your work by making a list of all you have to complete, from walking the dog and washing the clothes, to phoning a or checking your emails? Do you always take a list with you to the supermarket? Do you write down all the steps you need to see a big project through? If you're a natural list maker you can consider this habit as a good thing to do. Here are some reasons: Gives your memory a kick: Even if you pride yourself on remembering all you need to complete, it's only human to forget every once in a while. A to-do list is a handy reminder. Helps you stay in the moment: It sounds surprising, but true. Trying to mentally keep track of the things weighing on your mind can make it tougher to concentrate on the activity at hand. _ : Instead of carrying around a nagging nervousness that you've forgotten to take care of a chore, keeping an up-to-date list can help relieve that kind of stress. Helps planning: Most of us are likely to put off until tomorrow what we can do today, but keeping a list helps to keep this natural impulse at bay. Thinking about what has to be done in advance is a good way to prevent us from falling behind schedule. Prioritizes : Seeing everything we want to take care of allows us to prioritize and give the most time to the more important tasks. On the other hand, not having a to-do list makes it possible for us to spend too much time on unimportant items. Boosts happiness: You will feel very happy each time you check off a task you have completed on your list. Studies show that reaching your goal actually releases feel-good chemical in your brain that boosts happiness.
Question: The author introduces the topic to be discussed by _ .
Options: (A) asking a series of questions (B) presenting some simple facts (C) stating his own point of view (D) listing the benefits of a to-do list

Ex Output:
A

Ex Input:
Article: Food Cures Our Price: $31.96 & this item ships for FREE with Super Saver Shipping. SKU: 79133 In Stock Usually ships in 1 business day Description: Did you know that fish oil is emerging as a real treatment for depression? That coffee and cinnamon can actually lower blood sugar in people with diabetes? Here you'll find detailed food prescriptions, based on the latest research, for more than 57 common health problems, including colds, hay fever, memory loss and so on. Plus dozens of practical suggestions for getting more of the foods that can help prevent disease, and simple recipes for immune-boosting smoothies, healing teas, and more. Product Details: Hardcover: 352 pages Publisher: Reader's Digest Association Publication Date: 2007-09 ISBN: 0762107308 Average Customer Rating: based on 3 reviews Average Customer Review: Exactly As Described Feb 15, 2010 Product arrived quickly. The description said there was a tear on the cover of the book. I was pleased that it was just a small tear and otherwise the book was in very good condition. This seller was honest and did not try to overplay the condition in order to make a sale. Some good information Feb 06, 2010 This book does have some good information, but it does not talk at all about eating organic food, grass fed beef, free-range eggs, etc. The poisonous pesticides and artificial hormones in our society have a huge effect on our health and some illnesses probably wouldn't even exist if it weren't for them. Fantastic Aug 05, 2009 This book is perfect for any questions you have about using food to help your body. We all know chicken soup helps colds, but did you know? This book will tell you exactly what's special about each food and what part of the body or disease it helps. _ any health problems you have with this common sense food guide.
Question: Who is the advertisement mainly intended for?
Options: (A) People who learn to treat patients. (B) People who publish books on health. (C) People who cook food for certain patients. (D) People who try to improve their health.

Ex Output:
D