Two dice are thrown simultaneously. The probability that the product of the numbers appearing on the top faces of the dice is a perfect square is
(A) $1 / 9$
(B) $2 / 9$
(C) $1 / 3$
(D) $4 / 9$
Two dice are thrown simultaneously. The probability that the product of the numbers appearing on the top faces of the dice is a perfect square is
(A) $1 / 9$
(B) $2 / 9$
(C) $1 / 3$
(D) $4 / 9$