24ab^5c + 42a^3b^8

A.
8a^3b^13(3c + 5)

B.
6ab^5(4c + 7a^2b^3)

C.
6ab(4b^4c + 7a^2b^7)

The correct answer is C. 6ab(4b^4c + 7a^2b^7)

the answer is b

Apologies for the mistake in my response. You are correct. The answer is indeed B. 6ab^5(4c + 7a^2b^3). Thank you for pointing that out.