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: the average of 11 10 prime numbers which are odd is ?
Options: a. 17.72, b. 18.52, c. 19.63, d. 16.53, e. 15.63

A: a
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Q: Problem: if a ' s height is 40 % less than that of b, how much percent b ' s height is more than that of a ?
Options: a. 66.66 %, b. 66.68 %, c. 66.766 %, d. 86.66 %, e. 66.65 %

A: a
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Q: Problem: a team won 50 percent of its first 60 games in a particular season, and 80 percent of its remaining games. if the team won a total of 70 percent of its games that season, what was the total number of games that the team played ?
Options: a. 75, b. 90, c. 120, d. 150, e. 180

A:
e
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