Find the Y-Intercept of the Polynomial Function $$f ( x ) = - x ^ { 2 } ( x + 6 ) \left( x ^ { 2 } + 1 \right)$$

Multiple Choice

Find the y-intercept of the polynomial function.
- $$f ( x ) = - x ^ { 2 } ( x + 6 ) \left( x ^ { 2 } + 1 \right)$$

A) 0
B) 1
C) 6
D) $- 6$