Factor the Polynomial Completely $10 x ^ { 2 } + 60$

Multiple Choice

Factor the polynomial completely. $10 x ^ { 2 } + 60$

A) $10 ( x - 6 ) ( x + 6 )$
B) $10 \left( x ^ { 2 } + 6 \right)$
C) $10 \left( x ^ { 2 } - 6 \right)$
D) $10 ( x + 6 )$
E) none of these