Find All the Zeros $$f ( x ) = x ^ { 4 } - 13 x ^ { 2 } - 14$$

Multiple Choice

Find all the zeros.
- $$f ( x ) = x ^ { 4 } - 13 x ^ { 2 } - 14$$

A) $\pm \sqrt { 14 } , \pm 1 i$
B) $\pm \sqrt { 14 } , \pm 1$
C) $\pm 14 , \pm 1 i$
D) $\pm 14 , \pm 1$