Determine the Degree of the Polynomial $- x - 3 x ^ { 2 } - 6 x ^ { 3 } - 2 x ^ { 5 }$

Determine the degree of the polynomial.
- $- x - 3 x ^ { 2 } - 6 x ^ { 3 } - 2 x ^ { 5 }$

A) 4
B) 11
C) 5
D) 10