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: find the sum of first 89 odd numbers
Options: a. 7921, b. 4800, c. 7900, d. 4980, e. 4960
a

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

Problem: praveen starts business with rs. 3780 and after 5 months, hari joins with praveen as his partner. after a year, the profit is divided in the ratio 2: 3. what is hari ’ s contribution in the capital ?
Options: a. s. 7500, b. s. 8000, c. s. 8500, d. s. 9720, e. s. 6000

d