If the cost price is 91% of sp then what is the profit %  Choose the most appropriate option.
A) 9.89 % B) 8.90 % C) 9.00 % D) 8.00 % E) 9.27 %

Rationale: "sol . sp = rs 100 : then cp = rs 91 : profit = rs 9 . profit = { ( 9 / 91 ) * 100 } % = 9.89 % answer is a ."
Answer: A