Use the distributive property of multiplication over addition to rewrite the sum as a product of two factors, where one of the factors is a sum.

A) 4(5a^2 - 4 - 2a)

B) a(20a^2 - 16a - 8)

C) 4(5a^ - 4a - 2)

D) 4a(5a - 16 - 8a)