contestada

simplify 2a^2b^3 (4a^2 + 3ab^2 - ab) =?

A. 8a^4b^4 + 6a^3b^5 + 1a^3b^4

B. 8a^4b^5 + 3a^3b^5 - 2a^3b^4

C. 8a^4b^5 + 3a^3b^5 + 2a^3b^4

D. 8a^4b^3 + 6a^3b^5 - 2a^3b^4