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: If a team played g games and won w of them, what fraction of the games played did the team lose?
(A)\(\frac { w - g } { w } \) (B)\(\frac { w - g } { g } \) (C)\(\frac { g - w } { g } \) (D)\(\frac { g } { g - w } \) (E)\(\frac { g - w } { w } \)
Example Output: C

Example Input: A chef prepares a multicourse meal at a client's home. For this service, she charges a base price of \$150, and adds an additional \$20 for each course ordered. If a client orders c courses, which of the following represents the total charge, in dollars, for the meal?
(A)\(170c\) (B)\(150 + c\) (C)\(150c + 20\) (D)\(150 + 20c\) (E)\(170 + 20c\)
Example Output: D

Example Input: A radio station emits a signal that can be received for 60 miles in all directions. If the intensity of the signal is strengthened so the reception increases by 40 miles in all directions, by approximately how many square miles is its region of reception increased?
(A)6,300 (B)10,000 (C)10,300 (D)20,000 (E)31,400
Example Output:
D