The length of a rectangle is reduced by 20%. By what % would the width have to be increased to maintainthe original area?
Choose the correct choice from the following options: A) 14 % B) 15 % C) 25 % D) 30 % E) 35 %

Rationale: "sol . required change = ( 20 * 100 ) / ( 100 - 20 ) = 25 % c"
Answer: C