Determine Whether the Given Function Is a Polynomial Function $$k ( x ) = - 3 x ^ { 6 } - 0.7 x + x ^ { 3 }$$

Multiple Choice

Determine whether the given function is a polynomial function. If it is a polynomial function, state the degree. If not, state the reason why. $$k ( x ) = - 3 x ^ { 6 } - 0.7 x + x ^ { 3 }$$

A) No, some range elements correspond to more than one domain element
B) Yes; degree 6
C) Yes; degree 10
D) No; -0.7 is not an integer