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: which expression is the greatest ?
Options: a. 3252 / 3257, b. 3456 / 3461, c. 3591 / 3596, d. 3346 / 3351, e. 3453 / 3458
A:
c