You will be given a definition of a task first, then some input of the task.
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.

Problem: if an object travels at 9 feet per second, how many feet does it travel in one hour ?
Options: a. 32400, b. 30000, c. 32000, d. 1800, e. 22000
Output:
a