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: income and expenditure of a person are in the ratio 7: 6. if the income of the person is rs. 14000, then find his savings ?
Options: a. 500, b. 1000, c. 1500, d. 2000, e. 2500
d

Problem: of 30 applicants for a job, 9 had at least 4 years ' experience, 18 had degrees, and 3 had less than 4 years ' experience and did not have a degree. how many of the applicants had at least 4 years ' experience and a degree ?
Options: a. 14, b. 10, c. 9, d. 7, e. 5
b

Problem: a and b invests rs. 10000 each, a investing for 6 months and b investing for all the 12 months in the year. if the total profit at the end of the year is rs. 24000, find their shares ?
Options: a. 8000, 16000, b. 1599,2000, c. 7290,3000, d. 15000,4000, e. 72821,5000
a