An error 6% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is  Choose the correct answer.
A) 12.04 %  B) 14.14 %  C) 12.36 %  D) 12.26 %  E) 15.5 %

Rationale: "100 cm is read as 102 cm . a 1 = ( 100 x 100 ) cm 2 and a 2 ( 106 x 106 ) cm 2 . ( a 2 - a 1 ) = [ ( 106 ) 2 - ( 100 ) 2 ] = ( 106 + 100 ) x ( 106 - 100 ) = 1236 cm 2 . percentage error = 12.36 % d"
Answer: D