If a is an integer greater than 2 but less than 7 and b is an integer greater than 4 but less than 13, what is the range of a/b? Choose the most appropriate option
A) 23 / 34
B) 57 / 60
C) 51 / 67
D) 19 / 71
E) 75 / 64

Rationale: "the way to approach this problem is 2 < a < 7 and 4 < b < 13 minimum possible value of a is 3 and maximum is 6 minimum possible value of b is 5 and maximum is 12 range = max a / min b - min a / max b ( highest - lowest ) 6 / 5 - 3 / 12 = 57 / 60 hence b"
Answer: B