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: The following are letters to the editor of a school newspaper Dear editor, I'd like to express my opinion about grades. Students should be allowed to study without worrying about grades. Fortunately, most educators are becoming aware of the fact that students have different interests and abilities. I understand that grades are useful, but grades often limit creativity. Competing for better grades causes many students to turn down opportunities to pursue music, dramatics and sports. Grades force an arbitrary standard of success on everyone. I do not demand as some extremists do, that grades be removed immediately. However, I do believe that less emphasis should be placed on grades. I hope that someday grades will become optional at Village High School. Magdalena Smith Drama Club Dear editor, I'd like to say something about grades. Let's face the facts about grades. Grades perform three basic functions. First, grades motivate students to work at their highest level of competence. Second, they act as a reward for hardworking students and as a punishment to students who do not work hard. Finally, grades are used as an effective standard by which to measure student achievement. Good grades help students to get jobs and to get into university. I've spoken with a number of students who have jobs, and most of them say that they were hired primarily on the basis of their grades. My grades helped me land a part-time job and will help me get into university next year. I think grades are extremely important at Village High School. Simon Harper Science Club
Question: Which of the following is not Magdalena Smith's opinion?
Options: (A) Students may give up the chance to learn music and sports for grades. (B) Students' creativity may not be developed for grades. (C) Grades should not be used to measure a person's success. (D) Grades should be taken away at once.

Output: D

Input: Consider Input: Article: All things change except barbers, the ways of barbers, and the surroundings of barbers. These never change. What one experiences in a barber's shop the first time he enters one is what he always experiences in barbers' shops afterward till the end of his days. I got shaved this morning as usual. A man approached the door from Jones Street as I approached it from Main--a thing that always happens. I hurried up, but it was of no use; he entered the door one little step ahead of me, and I followed in and saw him take the only empty chair, the one headed by the best barber. It always happens so. I sat down, hoping that I might sit in the chair belonging to the better of the remaining two barbers, for he was a bit ahead. I watched the probabilities with strong interest. When I saw that No. 2 was gaining on No. 1, my interest grew to solicitude . When No. 1 was gradually losing the race, my solicitude rose to anxiety. When No. 1 caught up again, and both were about to finish and say "Next!" first, my very breath stood still with the _ . But when I saw that he had lost the race by a single instant, I rose angrily and quitted the shop, to keep from falling into the hands of No. 2; for I have none of that firmness that enables a man to look calmly into the eyes of a waiting barber and tell him he will wait for his fellow-barber's chair. I stayed out fifteen minutes, and then went back, hoping for better luck. Unfortunately, all the chairs were occupied now, and four men sat waiting, silent, and looking bored, as men always do who are waiting their turn in a barber's shop. I sat down and waited. At last my turn came. A voice said "Next!" and I give in to No. 2, of course. It always happens so. I smiled and said that I was in a hurry, and it affected him as strongly as if he had never heard it. He explored my hair with his claws and suggested that it needed trimming . I said I did not want it trimmed. He explored again and said it was pretty long for the present style. I said I had had it cut only a week before. He stopped for a moment, and then asked "who cut it?" I stared at him from the mirror and replied "You did!". Then a dog-fight attracted his attention, and he ran to the window and stayed and watched it...
Question: The author left the barber's shop mainly because _ .
Options: (A) he would like to wait for "No. 1" outside (B) he would rather be served by the best barber (C) he lacked the courage to tell "No. 2" his intention (D) he was angry at the slow speed of "No. 1"

Output: C

Input: Consider Input: Article: Men sometimes say: "We are better and cleverer than women. Women never invented things. We do." It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns, too. But scientists and archeologists now agree that women invented one very important thing. It had changed the history. They invented agriculture. Before the invention of agriculture men were hunter. They went out every day. Sometimes they killed animals-sometimes animals killed them. Life was difficult and dangerous. Women had to go out every day, too. They collected roots, fruit and grass. Then, one day, more than 10,000years ago a woman dropped some grass seeds. She dropped them near her home in the Middle East. They grew--and the first wheat was born. The idea grew, too. Women planted roots and fruit trees. Then they could stay at home and look after the children and the animals. Women liked baby animals: dogs, cows, sheep and goats. That idea grew, too. Then their husbands did not have to go hunting for meat. They stayed at home. They built villages and cities. Men began civilization---after women invented agriculture.
Question: Sometimes men think that _ .
Options: (A) they have rights as equal as women (B) women have changed the history (C) they have more abilities than history (D) women are not so bright as they are
Output: D