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 total of 336 of 20 paise and 25 paise make a sum of rs. 71. the no of 20 paise coins is
Options: a. 238, b. 277, c. 278, d. 260, e. 288
d