15 Points!
If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.
f(x) = -15x^5 - 7x^4 + 3
A) Degree: -15; leading coefficient: 5
B) Degree: 9; leading coefficient: -15
C) Degree: 5; leading coefficient: -15
D) Not a polynomial function