Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

Q: Problem: at garage sale, all of the prices of the items sold were different. if the price of a radio sold at the garage sale was both the 9 th highest price and the 35 th lowest price among the prices of the items sold, how many items were sold at the garage sale ?
Options: a. 43, b. 28, c. 44, d. 49, e. 46

A: a
****
Q: Problem: if n is a positive integer and n ^ 2 is divisible by 36, then the largest positive integer that must divide n is
Options: a. 6, b. 12, c. 24, d. 36, e. 48

A: a
****
Q: Problem: the ages of two person differ by 12 years. if 5 years ago, the elder one be 5 times as old as the younger one, their present ages ( in years ) are respectively
Options: a. 30, 10, b. 25, 5, c. 29, 9, d. 50, 30, e. 20, 8

A:
e
****