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 is the information about plays which will be on these days. Big and Little It is a play written by Botho Strauss and directed by Laurence Strangio, featuring (......) second-year Performing Arts students. It is about a lonely woman living in a big city. From the play, we can learn how to get along well with our friends, our family, our lovers, ... and with ourselves. A dreamlike journey in search of identity ... When:15-17 March, 7:30 pm Where: Drama Theatre, Centre for the Performing Arts, Building 68, Clayton campus Tickets: Adults $10, Concessions $5 You can get the tickets at the door. Love Play It is written by Moira Buffini and directed by Trent Baker, featuring Performing Arts students. First-year Performing Arts students present Love Play. It follows a series of unexpected meetings that have taken place in the same place in London across 2,000 years, through the centuries from the Romans to the Elizabethans to the present day. Love Play is a comedy that challenges the reasons and ways we want love. When:17-19 April, 8 pm Where: Drama Theatre, Centre for the Performing Arts, Building 68, Clayton campus Tickets: Adults $10, Concessions $5 You can get the tickets at the door. Smashed It is a play written by Lally Katz and directed by Suzanne Chaundy, featuring second-year Performing Arts students. Smashed is about friendship, time travel and death. Writing for TheAge, Helen Thomson calls the play "a wonderful memory of childhood on the edge of adulthood."Smashedp raises invention, imagination and girl power. When: 24-26 April, 8 pm Where: Drama Theatre, Centre for the Performing Arts, Building 68, Clayton campus Tickets: Adults $10, Concessions $5 You can get the tickets at the door.
Question: We can know from the passage that Moira Buffini _ .
Options: (A) is a character in Big and Little (B) is the director of Smashed (C) wrote the play Love Play (D) once wrote for The Age
[EX A]: C

[EX Q]: Article: Supply and demand is perhaps one of the most basic concepts of economics and it is the backbone of a market economy. Demand refers to how much of a product or service is desired by buyers. The quantity demanded is the amount of a product people are willing to buy at a certain price; the relationship between price and quantity demanded is known as the demand relationship. Supply represents how much the market can offer. The quantity supplied refers to the amount of a certain goods producers are willing to supply when receiving a certain price. The relationship between price and how much of a goods or service is supplied to the market is known as the supply relationship. Price, therefore, is a reflection of supply and demand. The law of demand states that, if all other factors remain equal, the higher the price of a product, the fewer people will demand that product. The amount of goods that buyers purchase at a higher price is less as the price of a product goes up, so does the opportunity cost of buying that product. Like the law of demand, the law of supply shows the quantities that will be sold at a certain price. But unlike the law of demand, the supply relationship shows an upward slope. This means that the higher the price, the higher the quantity supplied. Producers supply more at a higher price because selling a higher quantity at a higher price increases the whole income. Now that we know the laws of supply and demand, let's turn to an example to show how supply and demand affect price. Imagine that a CD of your favorite band is sold for $20. Because the record company's previous analysis showed that consumers will not demand CDs at a price higher than $20, only ten CDs were sold because the opportunity cost is too high for suppliers to produce more. If, however, the ten CDs are demanded by 20 people, the price will then rise. As a result, the rise in price should cause more CDs to be supplied as the supply relationship shows that the higher the price, the higher the quantity supplied. If, however, there are 30 CDs produced and demand is still at 20, the price will not be pushed up because the supply is more than the demand.
Question: We know from the passage that changes in the prices of product cause changes in _ .
Options: (A) income and expense (B) invention and production (C) market and society (D) supply and demand
[EX A]: D

[EX Q]: Article: Well, when the huge wave hit the boat, my safety belt broke and I was swept overboard. I don't really understand how it happened, but it did. I heard someone yell out, but then my boat, Wild One, went off into the darkness and I was alone in a very rough sea. I then spent five and a half hours in the water. The place where it happened was, oh, about 50 kilometers from shore. It was likely that I wouldn't see another day, but I always thought I'd overcome the difficulties. At first I was watching out for Wild One. The rest of the crew knew I was gone, so they were sure to come back and look for me. After a while, I saw the boat's lights when it came looking for me. They were within about 300 meters of me, but the spotlight just missed me. The reason why they didn't see me was because of the huge waves. You know, I started sailing when I was seven, and started ocean racing when I was about eighteen, but I'd never been overboard before. I believed I was going to survive, but it was very cold, and as the hours passed I started to get desperate----and frozen! It was around 5 am when I saw the lights of a tanker coming towards me. I figured it was probably my last chance. At first, I thought they were going to miss me, and then they made a slight turn and I yelled out "Help!" and they heard me. Then another yacht appeared. These guys were terrific. They gave me dry clothes, and then one jumped into the bunk and hung onto me. They covered us with as much dry clothing as they could, and the guy in with me stayed to transfer his body heat to me.
Question: The author of the passage was alone in the sea NOT because _ .
Options: (A) the wind was too strong (B) the wave hit the boat (C) the safety belt was broken (D) his boat was in the darkness
[EX A]:
D