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.
--------
Question: Problem: how many integers are between 6 and 74 / 5, inclusive ?
Options: a. 4, b. 5, c. 6, d. 7, e. 9

Answer: e


Question: Problem: 40 is subtracted from 60 % of a number, the result is 50. find the number ?
Options: a. 150, b. 330, c. 277, d. 279, e. 712

Answer: a


Question: Problem: a pupil ' s marks were wrongly entered as 85 instead of 45. due to that the average marks for the class got increased by half. the number of pupils in the class is :
Options: a. 30, b. 80, c. 20, d. 25, e. 26

Answer:
b