Use the Quadratic Formula to Solve the Equation $$n ^ { 2 } + 16 n + 43 = 0$$

Multiple Choice

Use the quadratic formula to solve the equation.
- $$n ^ { 2 } + 16 n + 43 = 0$$

A) $\{ - 8 - \sqrt { 21 } , - 8 + \sqrt { 21 } \}$
B) $\{ - 16 + \sqrt { 43 } \}$
C) $\{ 8 - \sqrt { 43 } , 8 + \sqrt { 43 } \}$
D) $\{ 8 + \sqrt { 21 } \}$