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.

Input: Consider Input: Stephanie, Damon, and Karissa have been contracted to paint an office building that contains 72 rooms. If Stephanie paints half as many rooms as Karissa and 12 more than Damon, how many rooms does Karissa paint?
(A)9 (B)21 (C)30 (D)42 (E)48

Output: D

Input: Consider Input: There are nine classrooms in a particular school. Each classroom has at least 24 students and at most 30 students. Which of the following could be the total number of students in the school?
(A)90 (B)100 (C)200 (D)250 (E)300

Output: D

Input: Consider Input: A certain car needs 15 gallons to travel 300 miles. At this rate, how many gallons are needed to travel 500 miles?
(A)16 (B)20 (C)25 (D)30 (E)35
Output: C