Given the task definition and input, reply with output. 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: the average ( arithmetic mean ) of 4 different integers is 76. if the largest integer is 90, what is the least possible value of the smallest integer ?
Options: a. 1, b. 19, c. 29, d. 30, e. 37
e