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: Anne-Marie was \(x\) years old \(y\) years ago. How old will she be in \(z\) years?
(A)\(x + y + z\) (B)\(x - y + z\) (C)\(z - x - y\) (D)\(y - x + z\) (E)\(x - y - z\)

A: A
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Q: The Brighton High School Marching Band has x members. The Brighton Drum Corp has \(y\) members. If the Monroe Country All-Star Drum Line consists of all the members of the Brighton High school Marching Band and all the members of the Brighton Drum Corp except for the \(p\) common members (\(p > 0\)), then how many members does the Monroe Country All-Star Drum Line have in terms of \(x\), \(y\), and \(p\) ?
(A)\(x + y\) (B)\(x + y - p\) (C)\(x + y + 2p\) (D)\(x + y - 2p\) (E)\(2x + 2y - p\)

A: D
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Q: Max purchased some shares of stock at \$10 per share. Six months later the stock was worth \$20 per share. What was the percent increase in the value of Max' s investment?
(A)20\% (B)50\% (C)100\% (D)200\% (E)500\%

A:
C
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