prep

57.
                7044-!-item-!-187;#058&005427

If n is a multiple of 5 and n = (p^2)q, where p and q are prime numbers, which of the following must be a multiple of 25 ?

(A) p^2

(B) q^2

(C) pq

(D) (p^2)(q^2)

(E) (p^3)q

答案是D