A reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.1000, what is the reduced price for kg? Choose the correct option.
A) s . 50  B) s . 46  C) s . 49  D) s . 41  E) s . 42

Rationale: "1000 * ( 25 / 100 ) = 250 - - - - 5 ? - - - - 1 = > rs . 50 answer : a"
Answer: A