Find the Derivative Of $f ( x ) = \tan ^ { 3 } \left( x ^ { 2 } + 1 \right)$

Multiple Choice

Find the derivative of $f ( x ) = \tan ^ { 3 } \left( x ^ { 2 } + 1 \right)$

A) $3 \tan ^ { 2 } \left( x ^ { 2 } + 1 \right) \sec ^ { 2 } \left( x ^ { 2 } + 1 \right)$
B) $3 x \tan ^ { 2 } \left( x ^ { 2 } + 1 \right) \sec ^ { 2 } \left( x ^ { 2 } + 1 \right)$
C) $6 x \tan ^ { 2 } \left( x ^ { 2 } + 1 \right) \sec ^ { 2 } \left( x ^ { 2 } + 1 \right)$
D) $6 x \tan ^ { 2 } \left( x ^ { 2 } + 1 \right)$