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: A bus takes 3 hours to cover a distance of 500 Km. how much should the speed in Kmph be maintained to cover the same direction in 5/3th of the previous time?

 Option A: 75 Kmph

 Option B: 100 Kmph

 Option C: 90 Kmph

 Option D: 65 Kmph

 Option E: 70 Kmph
[EX A]: Option B

[EX Q]: Question: In how many different number of ways a Committee of 3 person of can be selected from 5 boys and 3 girls such that at least 1 girl is included in the committee

 Option A: 41

 Option B: 42

 Option C: 46

 Option D: 48

 Option E: 50
[EX A]: Option C

[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 10(B + G) is ?

 Option A: Equal to 3

 Option B: Less than 3

 Option C: More than 10

 Option D: Less than 10

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