How many of the 20 perfect squares 1^{2}, 2^{2}, 3^{2}, \ldots, 19^{2}, 20^{2} are divisible by 9?
Answer Choices
A. 2
B. 3
C. 4
D. 5
E. 6
How many of the 20 perfect squares 1^{2}, 2^{2}, 3^{2}, \ldots, 19^{2}, 20^{2} are divisible by 9?
Answer Choices
A. 2
B. 3
C. 4
D. 5
E. 6