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.

Article: The tallest building in the United States, the One World Trade Center, opened on November 3, 2014 in New York. The building is 1,776 feet tall, making it the 3rd tallest building in the world. It has 104 floors. The building stands in the area where the twin towers of the World Trade Center once stood. On September 11, 2001, a group of terrorists destroyed these twin towers and killed nearly 3,000 people. It took 8 years to build the new One World Trade Center. Does the height of the building in feet reminds you of something in history? _ is the year when the United States declared its independence from Great Britain. One problem with such a tall building is how to clean the windows. Well, a platform hangs from ropes, and workers on the platform clean windows. On November 12, while two men were busy cleaning windows, a rope of the platform broke near the 68th floor. The two men were saved by cutting a hole in the glass window. The two tallest buildings in the world are the BurjKhalifa in Dubai, UAE and the Makkah Royal Clock Tower in Mecca, Saudi Arabia.
Question: When did the One World Trade Center open?
Options: (A) September 11, 2001. (B) September 11, 2011. (C) November 3, 2006. (D) November 3, 2014.
D

Article: Generational differences and the economy are shifting more responsibilities for children from their parents to grandparents, according to a new survey. More than one-third of grandparents aged 50 and older contribute financially to their grandchildren's upbringing, and 11 percent have a grandchild living with them, the poll by AARP, the group for 36 million older US citizens, showed. Forty percent of people who responded to the telephone survey, whose average age was 69, reported spending more than $500 on grandchildren over the past year beyond traditional gifts.Education costs accounted for 53 percent, daily expenses for 37 percent and medical costs for 23 percent.Sixteen percent provided daycare for grandchildren. "They are the safety net for American families, helping to pay for practical expenses and necessities," said Amy Goyer, AARP's multi-generational and family issues expert. "We see many providing daycare services, while growing numbers even have grandchildren living with them," she said, referring to the 16 percent who watch their grandchildren while the parents are at work or school. Generally nearly 90 percent of the 1,904 grandparents questioned said they play a very or somewhat important role in their grandchildren's lives, and about 70 percent live within 50 miles of the closest one. The poll conducted by Woelfel Research Inc.also showed that grandparents were increasingly keyed to the younger generation's life issues and preferred ways of communicating. More than one-third connect with their grandchildren via email or text messaging, while half said they routinely discuss topics ranging from values and spirituality to drug and alcohol use. Nearly 40 percent said they had discussed dating or sex with at least one grandchild.Some 60 percent said they spoke with their grandchildren at least once a week. Most of the grandparents said they had five or more grandchildren, while one-fourth said they had grandchildren of a different race or mixed race.
Question: The passage mainly tells us _ .
Options: (A) the differences between generations are huge (B) how Woelfel Research Inc.conducted the poll (C) parents are the safety net for American families (D) grandparents take more responsibilities for grandchildren
D

Article: So many of us hold on to little complaints that may have come from an argument ,a misunderstanding,the way we were raised,or some other painful events. Stubbornly,we wait for someone else to reach out to us -- believing this is the only way we can forgive or _ a friendship or family relationship. A friend of mine,recently told me that she hadn't spoken to her son in almost three years. She said that she and her son had had a disagreement about his wife and that she wouldn't speak to him again unless he called first. When I suggested that she be the one to reach out,she said," I can't do that. He's the one who should apologize. " After a little gentle encouragement,however,she did decide to be the first one to reach out. To her amazement,her son was grateful for her willingness to call and offered an apology of his own. As is usually the case,when someone takes the chance and reaches out,everyone wins. Whenever we hold on to our anger, we turn" small stuff")"into really" big stuff" in our minds. We start to believe that our positions are more important than our happiness. They are not. If you want to be a more peaceful person you must understand that being right is almost never more important than allowing yourself to be happy. The way to be happy is to let go,and reach out. Let other people be right. This doesn't mean that you're wrong. Everything will be fine. You'll experience the peace of letting go,as well as the joy of letting others be right. You'11 also notice that,as you reach out and let others be "right",they will become less defensive and more loving toward you. They might even reach back. But,if for some reason they don't, that's okay too. You '11 have the inner satisfaction of knowing that you have done your part to create a more loving world,and certainly you'11 be more peaceful yourself.
Question: In the author's opinion, we hold on to our anger often because we think _ .
Options: (A) we can turn small issues into big ones (B) our positions are higher than others (C) our own opinions matter most (D) others will be less defensive
C