TASK DEFINITION: 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.
PROBLEM: Marvin eats 3 bananas and 1 apple every day. If the cost of each banana is b dollars and the cost of each apple is a dollars, which of the following represents the total cost, in dollars, of the bananas and apples Marvin eats in 1 week? (1 week = 7 days).
(A)\(7b + a\) (B)\(21b + a\) (C)\(7(b + a)\) (D)\(7(b + 3a)\) (E)\(7(3b + a)\)

SOLUTION: E

PROBLEM: Angelique invited 42 people to a conference. Of the invitees, 8 people declined, and the rest accepted. On the day of the conference, a snowstorm prevented half of those who accepted from making it to the conference. If no other people accepted or declined, what fraction of Angelique's original invitees attended the conference?
(A)\(\frac { 13 } { 42 } \) (B)\(\frac { 1 } { 3 } \) (C)\(\frac { 5 } { 14 } \) (D)\(\frac { 8 } { 21 } \) (E)\(\frac { 17 } { 42 } \)

SOLUTION: E

PROBLEM: If it is now September, what month will it be 555 months from now?
(A)April (B)June (C)September (D)November (E)December

SOLUTION:
E