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: There are some pigeons and hares in a zoo. If heads are counted, there are 120. If legs are counted, there are 580. The number of hares in the zoo is?

Option A: 20

Option B: 82

Option C: 190

Option D: 137

Option E: 170
[A]: Option E

[Q]: Question: In a certain school, the ratio of boys to girls is 5 to 13. If there are 160 more girls than boys, how many boys are there?

Option A: 100

Option B: 36

Option C: 45

Option D: 72

Option E: 117
[A]: Option A

[Q]: Question: Mary decided to save a certain amount of her monthly salary each month and her salary was unchanged from month to month. If Mary's savings by the end of the year from these monthly savings were SIX times the amount she spent per month, what should be the fraction of her salary that she spent each month?

Option A: 1/2

Option B: 3/4

Option C: 1/3

Option D: 2/3

Option E: 1
[A]:
Option D