Find All the Real Zeros of the Polynomial Function $f ( x ) = x ^ { 5 } - 16 x ^ { 3 } + 64 x$

Multiple Choice

Find all the real zeros of the polynomial function.​ $f ( x ) = x ^ { 5 } - 16 x ^ { 3 } + 64 x$ ​

A) $0 , \pm \sqrt { 8 }$
B) $0 , \sqrt { 8 }$
C) $0,8$
D) $0 , - 8$
E) $0 , - \sqrt { 8 }$