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.
Input: When the average (arithmetic mean) of a list of prices is multiplied by the number of prices, the result is n. What does n represent?
(A)The average of the prices (B)The number of prices (C)Half of the number of prices (D)The sum of the prices (E)Half of the sum of the prices

D