A square board that has an area of 25 sq.inches is to be cut into pieces, each of which is a square with sides of length 1,2,3 inches. What is the least number of such square pieces into which the board can be cut?
A.5
B.6
C.7
D.8
E.9![]()
A.5
B.6
C.7
D.8
E.9