1.) The area of playground is 1600 m2. What is the perimeter?
I. It is a perfect square playground.
II. It costs Rs. 3200 to put a fence around the playground at the rate of Rs. 20 per metre.
A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer