Find the Degree of the Polynomial Function $$f ( x ) = \pi x ^ { 4 } + 7 x ^ { 3 } + 3$$

Find the degree of the polynomial function.
- $$f ( x ) = \pi x ^ { 4 } + 7 x ^ { 3 } + 3$$

A) 3
B) 4
C) $\pi$
D) 1