Question

simplify: (-2a^2b) x (4a^5b^2)

A. -8a^7b^2

B. -8a^10b^2

C. -8(ab)^10

D. 16a^7b^3

Answer 1

i got the answer should be 
-8a^7b^3x but its not one of your answer choices 

Answer 2

(-2a^2b) x (4a^5b^2)

=-8a^7b^3

I don't see any of those choices are correct answer

should be -8a^7b^3