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 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: Sum of 19 odd numbers is?

 Option A: 341

 Option B: 351

 Option C: 361

 Option D: 371

 Option E: 381
[EX A]: Option C

[EX Q]: Question: Calculate how many men are needed to finish a specific task in 35 days if it will take 20 men to complete the same task in 70 days. ?

 Option A: 40

 Option B: 20

 Option C: 10

 Option D: 30

 Option E: 60
[EX A]:
Option A