A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is
Choose the correct choice from the following options.
A) 28 %	B) 30 %	C) 32 %	D) 38 %	E) 40 %

Rationale: "let original length = x and original breadth = y . decrease in area = xy - 80 x x 90 y 100 100 = xy - 18 xy 25 = 7 xy . 25 decrease % = 7 xy x 1 x 100 % = 28 % . 25 xy a )"
Answer: A