If p/q =4/5, then the value of 1/7 + {(2q - p) / (2q + p)} is ? Options:
A) 4 / 7	B) 34	C) 1	D) 2	E) 3

Rationale: "answer given exp . = 4 / 7 + { ( 2 q - p ) / ( 2 q + p ) } dividing numerator as well as denominator by q , exp = 1 / 7 + { 2 - p / q ) / ( 2 + p / q ) } = 1 / 7 + { ( 2 - 4 / 5 ) / ( 2 + 4 / 5 ) } = 1 / 7 + 6 / 14 = 1 / 7 + 3 / 7 = 4 / 7 correct option : a"
Answer: A