The length of a rectangle is reduced by 10%. By what % would the width have to be increased to maintain the original area?
Choose the correct answer:
A) 10 %  B) 11.1 %  C) 25 %  D) 30 %  E) 35 %

Rationale: "sol . required change = ( 10 * 100 ) / ( 100 - 10 ) = 11.1 % b"
Answer: B