Find the Derivative of the Function $f(x)=\left(3 x^{4}+8\right)^{2}$ A) $f^{\prime}(x)=144 x^{15}+96 x^{3}$

Multiple Choice

Find the derivative of the function.
- $f(x) =\left(3 x^{4}+8\right) ^{2}$

A) $f^{\prime}(x) =144 x^{15}+96 x^{3}$
B) $f^{\prime}(x) =9 x 16+64$
C) $f^{\prime}(x) =72 x^{7}+192 x^{3}$
D) $f^{\prime}(x) =6 x^{4}+16$