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.

[Q]: Article: What a great project this is, building your own greenhouse! If you're a gardener, then a greenhouse is necessary no matter where you live. As long as you've got some good plans, it's possible to build a backyard greenhouse within just a few days. It's a great way to impress the neighbors! Metal greenhouses are practical, I agree, but they look ugly. If you build your own backyard greenhouse from wood, you'll end up with a lovely looking Victorian-style greenhouse, which will last very long if you treat it with the correct wood protection. Of course you'll save a lot of money in the process too. How much exactly? It's difficult to say as it depends on how much glass costs where you live. After all, there isn't much wood required, as it's only the actual frame that is wooden. To make sure you save the most money, it's best to take your plans to wherever you plan to buy your materials. That way you won't end up wasting any money on unnecessary materials. To be honest, saving money is not the main reason for building your own greenhouse. It's the fun you'll get from building it and the pleasure you'll get from showing it off to your friends and family that makes the project worth doing. Nothing beats the feeling when someone asks you where you bought something and you turn around and say "Oh, actually, I built it myself!" That feeling is priceless! You'll never feel like that over something you've bought!
Question: According to the author, it is better to build _ .
Options: (A) a metal greenhouse (B) a grass greenhouse (C) a wooden greenhouse (D) a brick greenhouse
[A]: C

[Q]: Article: Once upon a time the colors of the world started to quarrel. Green said, "Clearly I am the most important. I am the sign of life and hope. I was chosen for grass, trees and leaves. Look over the countryside and you will see that I am in the majority." Blue interrupted, "You only think about the earth, but consider the sky and the sea. It is the water that is the basis of life." Yellow chuckled . "The sun is yellow, as well as the moon and the stars. Every time you look at a sunflower, the whole world starts to smile." Red could bear it no longer. "I am the ruler of all of you. I am blood-life's blood! I am the color of danger and bravery. I bring fire into the blood. I am the color of passion and love." Purple stood at his full height. "I am the color of royalty and power. I am the sign of authority and wisdom. People do not question me! They listen and obey." Finally Indigo spoke with determination, "Think of me and I am the color of silence. I represent thought and reflection. You need me for balance and contrast , for prayer and inner peace." The colors went on boasting , each showing off his or her own advantages. Suddenlythere came a flash of bright lightening. Thunder rolled and boomed. Rain started to pour down. The colors were scared to death. In the midst of the quarrelling, rain began to speak, "You foolish colors. Don't you know that you were each made for a special purpose, unique and different? Join hands with one another and come to me." Doing as they were told, the colors united and joined hands. From then on, when it rains, colors will stretch across the sky in a great bow of color. Whenever a rainbow appears in the sky, let us remember to appreciate one another.
Question: Why did the colors quarrel?
Options: (A) Because they often fought for some reasons. (B) Because they were not liked by each other. (C) Because they all claimed to be the best. (D) Because they all wanted to rule other colors.
[A]: C

[Q]: Article: Since IQ testing began a century ago, women have been as much as five points behind, leading psychologists to suggest genetic differences between the male and the female. That gap has been narrowing in recent years and this year women have moved ahead. The finding has been made by James Flynn, a world-famous expert on IQ tests. "In the last 100 years, the IQ scores of both men and women have risen but women's have risen faster," said Flynn. " This is a result of modernity. The complex modern world is making our brains adapt and raising our IQs." One possible explanation is that women's lives have become more demanding as they multitask between raising a family and doing a job. Another might be that women have a slightly higher potential intelligence than men and are only now realizing it. Flynn also made the great discovery that scores in western countries increased by roughly three points a decade, which means people today get 30 more points than those living 100 years ago and that IQs can be improved. Flynn conducted new IQ tests in western European countries, America, Canada, New Zealand, Argentina and Estonia, which showed that the gap between men and women had become very small. In New Zealand, Estonia and Argentina, women scored slightly higher than men. Maybe because of this, many women have exchanged the role with their husband in family life. Helena Jamieson, 33, works a full-time job and her husband, Luke, 37, is a stay-at-home father. Helena said, "I'm definitely the more intellectual person in the relationship and I'm at work full-time rising up the career ladder while he is raising our daughter." She added, "In the past, men would look down on me, thinking that I was a woman and not as smart as them. But today, things have changed. I think women probably always know secretly deep down that they are the more intelligent ones-but as the gentler sex, we were just quiet about it in the past and let men believe that they ruled the world."
Question: In the psychologists' view, what led to women getting lower scores than men in IQ tests?
Options: (A) Family genes. (B) Genetic differences. (C) Educational levels. (D) Job positions.
[A]:
B