If the Following Is a Polynomial Function, Then State Its $$f ( x ) = - 19 - 15 x ^ { 4 } + 6 x - 2 x ^ { 3 } + 4 x ^ { 2 }$$

Multiple Choice

If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.
- $$f ( x ) = - 19 - 15 x ^ { 4 } + 6 x - 2 x ^ { 3 } + 4 x ^ { 2 }$$

A) Degree: 4 ; leading coefficient: $- 15$
B) Not a polynomial function.
C) Degree: 4 ; leading coefficient: $- 19$
D) Degree: $- 19$ ; leading coefficient: $- 15$