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: x% of y is y% of ?

 Option A: x

 Option B: 100x

 Option C: x/100

 Option D: y/100

 Option E: None
[EX A]: Option A

[EX Q]: Question: If the ratio of boys to girls in a class is B and the ratio of girls to boys is G; then 5 (B + G) is ?

 Option A: Equal to 3

 Option B: Less than 5

 Option C: More than 5

 Option D: Less than 1/5

 Option E: none of these
[EX A]: Option A

[EX Q]: Question: 20% of A is B, then B% of 20 is same as what?

 Option A: 7% of A

 Option B: 4% of A

 Option C: 8% of A

 Option D: 1% of A

 Option E: 3% of A
[EX A]:
Option B