Factor Completely $98 \mathrm{a}^{4} \mathrm{~b}-72 \mathrm{~b}^{3}$ A) $2 b\left(7 a^{2}+6 b\right)\left(7 a^{2}-6 b\right)$

Multiple Choice

Factor completely.
- $98 \mathrm{a}^{4} \mathrm{~b}-72 \mathrm{~b}^{3}$

A) $2 b\left(7 a^{2}+6 b\right) \left(7 a^{2}-6 b\right)$
B) $2 b(7 a-6 b) ^{2}$
C) Prime
D) $2 b(7 a+6 b) ^{2}$