You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
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Question: Question: A fish can go upstream at 35 kmph and downstream at 55 kmph, and then find the speed of the fish in still water?

Option A: 45

Option B: 55

Option C: 35

Option D: 65

Option E: 70

Answer: Option A

Question: Question: What percent of 60 is 70?

Option A: 133 13

Option B: 75

Option C: 60

Option D: 33 13

Option E: 116.66

Answer: Option E

Question: Question: Akhil's club with a total membership of 30 has formed 3 committees, M, S and R which have 8,12, and 5 members respectively. If no member of committee M is on either of the other 2 committees, what is the greatest possible number of members in the club who are on none of the committees.

Option A: 5

Option B: 7

Option C: 8

Option D: 10

Option E: 12

Answer:
Option D