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 Q]: 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.
[EX A]: D

[EX Q]: Article: Shoppers who have cut back on purchases in the worrying U.S. economy are likely to continue their conservative shopping habits even if the economy improves, according to a new study. That signals continued bad news for retailers , who have been struggling to respond to a great cutback in spending as consumers have opened their wallets only for basic items, while cutting back on unimportant purchases. The report, which estimates retail sales growth to be flat this year, found that three-quarters of respondents to a monthly survey of 4,000 consumers said they had shifted their shopping behaviors because of the economy. Most said they were making do with less or going without some favorite items. "The habits learned during this economic crisis have the potential to permanently change the mind-set of consumers," the report said. "The vast majority of shoppers who are changing their near-term shopping behavior say they plan to continue them as the economy improves." To ease the consumer discomfort, smart retailers will focus on downsizing, the report said, as adding stores to an already crowded retail landscape is out of fashion. It came up with smaller initiatives to build shopping buzz, such as limited editions of products or having existing stores target local markets. The report also forecast that retailers will increasingly focus on private brands to attract cost-conscious shoppers, while adding complementary categories of goods to their stores to make one-stop shops for consumers. While warehouse clubs and super centers are expected to fare the best in the weak environment in 2009, discount department stores and supermarkets will be the weakest, the report warned. Sales of clothes, though expected to rebound in 2010, will be the hardest hit and slowest to recover.
Question: The current shopping behavior in the US is becoming _ .
Options: (A) arbitrary (B) protective (C) conservative (D) aggressive
[EX A]: C

[EX Q]: Article: First direct coal liquefaction line produces (Xinhua) HOHHOT - China's first direct coal-to-oil project, operated by the country's leading coal producer, Shenhua Group, produced 866,000 tons of oil products last year. The direct coal liquefaction line is located in Ejin Horo Banner , Ordos city, North China's Inner Mongolia autonomous region. It produces 3,000 tons of oil products by using nearly 10,000 tons of coal per day, said Shenhua Coal Liquefaction and Chemical Co.,Ltd. With an investment of 12.6 billion yuan ($2.06 billion), Shenhua Group began construction of the project in 2004, using self-developed technologies. The project began trial production at the end of 2009 with a designed annual capacity of 1.08 million tons of diesel , naphtha and liquefied petroleum gas . Proven coal reserves around Ordos are estimated at 160 billion tons, or 11.4 percent of the country's total coal reserves. As part of its clean energy strategy, China has begun a number of direct or indirect coal liquefaction and coal gasification projects in Inner Mongolia, Shaanxi, Ningxia, Xinjiang and Liaoning in the past three years.
Question: What's mainly talked about in the passage?
Options: (A) The way to change coal to oil. (B) China's leading coal producer, Shenhua Group. (C) China's first direct coal-to-oil project. (D) The proven coal reserves around Ordos.
[EX A]:
C