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.

At a certain store, the price of a new compact disc is five times the price of a used compact disc. The difference between the two prices is ten dollars. What would be the total price of three used compact discs and two new compact discs at this store?
(A)\$26.00 (B)\$30.00 (C)\$32.50 (D)\$42.50 (E)\$45.00
C

There are a total of 256 people at a party. If after every 5 minutes, half of the people present leave, how many people will still remain after 20 minutes?
(A)128 (B)80 (C)64 (D)32 (E)16
E

Hillary buys a television on a 12-month installment plan. If each of her first three installments is twice as much as each of her nine remaining installments, and her total payment is $600, how much is her first installment?
(A)\$20 (B)\$35 (C)\$40 (D)\$65 (E)\$80

E