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: soymilk are sold in packages of two or 3 only. if hannah bought 17 soymilk exactly, what could be the number of large packs hannah bought ?
Options: a. 1, b. 4, c. 3, d. 5, e. 8
c