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.
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Question: Problem: it is only in the second option we find the sentence a in continuation with the opening sentence d. sentence a alone explains, why the fear has such enormous effect on the human beings.
Options: a. 28, b. 99, c. 728, d. 27, e. 271

Answer: b


Question: Problem: you have been given a physical balance and 7 weights of 40, 42, 36, 33, 47, 52 and 67 kgs. keeping weights on one pan and object on the other, what is the maximum you can weigh less than 169 kgs.
Options: a. 163, b. 166, c. 162, d. 164, e. 165

Answer: e


Question: Problem: an investor can sell her microtron stock for 36 $ per share and her dynaco stock for 60 $ per share, if she sells 300 shares altogether, some of each stock, at an average price per share of 40 $, how many shares of dynaco stock has she sold ?
Options: a. 50, b. 75, c. 92, d. 136, e. 184

Answer:
a