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.

Example Input: A snail travels 1 foot in 48 minutes. If the snail travels at a constant rate, how many minutes does it take to travel 1 inch? (1 foot = 12 inch)
(A)One (B)Two (C)Three (D)Four (E)Five
Example Output: D

Example Input: In a recent survey, 80 percent of the people polled were registered voters, and 75 percent of the registered voters voted in the last election. What fraction of all those surveyed were registered voters who did not vote in the last election?
(A)\(\frac{1}{10}\) (B)\(\frac{1}{5}\) (C)\(\frac{1}{4}\) (D)\(\frac{4}{5}\) (E)\(\frac{4}{8}\)
Example Output: B

Example Input: On a certain test, a class of 12 students has an average (arithmetic mean) score of 80. A second class of 18 students has an average score of 85. What is the average score of the combined classes?
(A)82 (B)82.5 (C)83 (D)84 (E)84.5
Example Output:
C