Factor the Binomial or Identify It as Prime $2 z ^ { 4 } - 2$

Multiple Choice

Factor the binomial or identify it as prime. $2 z ^ { 4 } - 2$

A) $2 \left( z ^ { 2 } + 1 \right) ( z - 1 ) ( z + 1 )$
B) $2 \left( z ^ { 2 } - 1 \right) ^ { 2 }$
C) $2 \left( z ^ { 2 } + 1 \right) \left( z ^ { 2 } - 1 \right)$
D) Prime