Determine If the Function Is a Monomial Function (Given That $$f ( x ) = 2 \cdot x ^ { - 3 }$$

Determine if the function is a monomial function (given that c and k represent constants) . If it is, state the degree and
leading coefficient.
- $$f ( x ) = 2 \cdot x ^ { - 3 }$$

A) Not a monomial function
B) Degree is 2 ; leading coefficient is $- 3$
C) Degree is 3 ; leading coefficient is 2
D) Degree is $- 3$ ; leading coefficient is 2