A man two flats for $675958 each. On one he gains 13% while on the other he loses 13%. How much does he gain or lose in the whole transaction?	Answers.
A) 1.69 % B) 2.56 % C) 3.12 % D) 4.65 % E) 5.12 %

Rationale: "in such a case there is always a loss loss % = ( 13 / 10 ) ^ 2 = 120 / 71 = 1.69 % answer is a"
Answer: A