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.

Q: Question: If the ratio of a to b is 2 to 3 and the ratio of b to c is 1 to 5, what is the ratio of a to c?

 Option A: 4/15

 Option B: 1/3

 Option C: 2/15

 Option D: 4/5

 Option E: 7/6

A: Option C
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Q: Question: The parameter of a square is double the perimeter of a rectangle. The area of the rectangle is 480 sq cm. Find the area of the square?

 Option A: 482

 Option B: 268

 Option C: 260

 Option D: 480

 Option E: 632

A: Option D
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Q: 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

A:
Option D
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