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.

[Q]: Problem: there are 750 male and female participants in a meeting. half the female participants and one - quarterof the male participants are democrats. one - third of all the participants are democrats. how many of the democrats are female ?
Options: a. 75, b. 100, c. 125, d. 175, e. 225
[A]: c


[Q]: Problem: a certain sum is invested at simple interest at 18 % p. a. for two years instead of investing at 12 % p. a. for the same time period. therefore the interest received is more by rs. 300. find the sum ?
Options: a. 7000, b. 2500, c. 2778, d. 2800, e. 2791
[A]: b


[Q]: Problem: a reduction of 40 % in the price of oil enables a house wife to obtain 8 kgs more for rs. 2400, what is the reduced price for kg ?
Options: a. rs. 120, b. rs. 125, c. rs. 130, d. rs. 135, e. rs. 140
[A]:
a