A fruit seller sells mangoes at the rate of Rs.6 per kg and thereby loses 15%. At what price per kg, he should have sold them to make a profit of 5%  Choose the correct answer.
A) rs 7.41
B) rs 9.81
C) rs 10.41
D) rs 11.81
E) none of these

Rationale: "explanation : 85 : 6 = 105 : x x = ( 6 × 105 / 85 ) = rs 7.41 option a"
Answer: A