Determine the Maximum Number of Turning Points of F $f ( x ) = - x ^ { 2 } ( x + 6 ) ^ { 3 } \left( x ^ { 2 } - 1 \right)$

Multiple Choice

Determine the maximum number of turning points of f.
- $f ( x ) = - x ^ { 2 } ( x + 6 ) ^ { 3 } \left( x ^ { 2 } - 1 \right)$

A) 7
B) 2
C) 5
D) 6