You are given a mathematical question described with an open-ended vocabulary. Questions in this task involve real-world situations, describing a mathematical problem. You are also given 4 or 5 answer options (associated with "A", "B", "C", "D", "E"). Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'. LaTeX mathematical format (the standard way to express mathematical expressions in the typesetting software known as LaTeX) is used to express equations. Each question is solvable with high school math knowledge. Give only one answer for each question.
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Question: At a basketball tournament involving 8 teams, each team played 4 games with each of the other teams. How many games were played at this tournament?
(A)64 (B)98 (C)112 (D)128 (E)224

Answer: C


Question: While away at school, Eileen receives an allowance of $400 each month, 35 percent of which she uses to pay her bills. If she budgets 30 percent of the remainder for shopping, allots $130 for entertainment, and saves the rest of the money, what percentage of her allowance is she able to save each month?
(A)2.5\% (B)13\% (C)20\% (D)35\% (E)52\%

Answer: B


Question: If 3 kilograms of rose petals are needed to produce 5 grams of perfume, how many kilograms of rose petals are needed to produce 870 grams of perfume?
(A)290 (B)522 (C)870 (D)1,450 (E)2,610

Answer:
B