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.

[Q]: 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
[A]: C


[Q]: A box of crayons contains only red, green, and blue crayons. The probability of randomly selecting a red crayon from the box is \(\frac{2}{5}\) and the probability of randomly selecting a blue crayon is \(\frac{1}{4}\). Which of the following could be the total number of crayons in the box?
(A)12 (B)16 (C)20 (D)25 (E)32
[A]: C


[Q]: At a certain restaurant, there are 25 tables and each table has either 2 or 4 chairs. If there is a total of 86 chairs accompanying the 25 tables, how many tables have exactly 4 chairs?
(A)9 (B)12 (C)15 (D)18 (E)21
[A]:
D