Factor the Following Polynomial Completely $2 a ^ { 4 } - 32$

Multiple Choice

Factor the following polynomial completely. $2 a ^ { 4 } - 32$

A) $2 ( a + 2 ) \left( a ^ { 2 } + 4 \right)$
B) $( a - 2 ) ( a + 2 ) \left( a ^ { 2 } + 4 \right)$
C) $2 ( a - 2 ) ( a + 2 ) \left( a ^ { 2 } + 4 \right)$
D) none of these