Determine the Degree of the Polynomial $- 2 x ^ { 2 } + 3 x ^ { 3 } + 3 x ^ { 4 } + 1$

Determine the degree of the polynomial.
- $- 2 x ^ { 2 } + 3 x ^ { 3 } + 3 x ^ { 4 } + 1$

A) 4
B) 10
C) 2
D) 9