In a fraction, if numerator is added by 2 and denominator by 1 it results 1, and if numerator added again by 4 and denominator by 2 it results 1/2. Find the fraction?  Choose the correct choice from the following:
A) 3 / 4 B) 5 / 4 C) 7 / 4 D) 9 / 4 E) 11 / 4

Rationale: x + 2 / y + 1 = 1 i . e , x - y + 1 = 0 ; - - - - - - - - ( 1 ) x + 4 / y + 2 = 1 / 2 i . e . , 2 x - y + 6 = 0 ; - - - - - - - - - ( 2 ) solving 1 and 2 . . . we get x = - 5 and y = - 4 answer is 5 / 4 . . . answer : b
Answer: B