Which of the following is the correct factorization of the polynomial below?

p^3 - 125q^3

A. (p - 5q)(p^2 + 5pq + 25q^2)

B. (p - 25q)(p^2 + 25pq + 25q^2)

C. (p^2 + 10q)(p^3 + 25pq + 5q^2)

D. The polynomial is irreducible.