If the Following Is a Polynomial Function, Then State Its $$f ( x ) = - 15 x ^ { 5 } - 9 x ^ { 4 } - 6 x ^ { 3 } + 12$$

Multiple Choice

If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.
- $$f ( x ) = - 15 x ^ { 5 } - 9 x ^ { 4 } - 6 x ^ { 3 } + 12$$

A) Degree: 4 ; leading coefficient: $- 15$
B) Degree: 5; leading coefficient: $- 15$
C) Degree: $- 15$ ; leading coefficient: $- 6$
D) Not a polynomial function.