What is the product of the monomials given?
$6 a^2 b^3 \cdot -3 a^5 b^3$
A$-18 a^7 b^6$
B$-18(a b)^{13}$
C$-18 a^{10} b^6$
D$-18 a^7 b^9$
$6 a^2 b^3 \cdot -3 a^5 b^3$
A$-18 a^7 b^6$
B$-18(a b)^{13}$
C$-18 a^{10} b^6$
D$-18 a^7 b^9$