Find a Polynomial of Least Degree with Only Real Coefficients $5 + 4 i$

Multiple Choice

Find a polynomial of least degree with only real coefficients and having the given zeros.
- $5 + 4 i$ and $5 - 4 i$

A) $f ( x ) = x ^ { 2 } - 10 x + 9$
B) $f ( x ) = x ^ { 2 } + 41$
C) $f ( x ) = x ^ { 2 } + 10 x + 41$
D) $f ( x ) = x ^ { 2 } - 10 x + 41$