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.

[EX Q]: The weights, in kilograms, of five students are 48, 56, 61, 52, and 57. If 1 kilogram = 2.2 pounds, how many of the students weigh over 120 pounds?
(A)1 (B)2 (C)3 (D)4 (E)5
[EX A]: C

[EX Q]: Mr. Gomes wrote a number on the blackboard. When he added 3 to the number, he got the same result as when he multiplied the number by 3. What was the number he wrote?
(A)-3 (B)0 (C)1.5 (D)\(\sqrt { 3 } \) (E)3
[EX A]: C

[EX Q]: If pencils cost $0.50 each and notebooks cost $3 each, which of the following represents the cost, in dollars, of p pencils and n notebooks?
(A)\(2pn\) (B)\(3.5pn\) (C)\(3.5(n + p)\) (D)\(3n + 0.50p\) (E)\(2(n + 0.50p)\)
[EX A]:
D