Find All Real Zeros of the Polynomial $f ( x ) = x ^ { 4 } - 113 x ^ { 2 } + 3136$

Multiple Choice

Find all real zeros of the polynomial $f ( x ) = x ^ { 4 } - 113 x ^ { 2 } + 3136$ and determine the multiplicity of each.

A) x = 49,multiplicity 2;x = 64,multiplicity 2
B) x = 7,multiplicity 2;x = 8,multiplicity 2
C) x = 49,multiplicity 2;x = 8,multiplicity 1
D) x = -7,multiplicity 2;x = -8,multiplicity 2
E) x = 7,multiplicity 1;x = -7,multiplicity 1;x = 8,multiplicity 1;x = -8,multiplicity 1