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.

[EX Q]: Question: If one-third of one-fourth of a number is 15, then three-tenth of that number is

 Option A: 35

 Option B: 36

 Option C: 45

 Option D: 54

 Option E: 57
[EX A]: Option D

[EX Q]: Question: Find the largest 4 digit number which isexactly divisible by 88?

 Option A: 4567

 Option B: 3588

 Option C: 9944

 Option D: 5465

 Option E: 6784
[EX A]: Option C

[EX Q]: Question: a lady's age is between 50 and 70.each of her sons has many sons as his
brothers. the sum of the sons and grandsons in the lady's age. what is her age?

 Option A: 61

 Option B: 62

 Option C: 63

 Option D: 64

 Option E: 65
[EX A]:
Option D