Factor the Polynomial Completely $x ^ { 2 } + 36$

Multiple Choice

Factor the polynomial completely. If the polynomial cannot be factored, write "prime."
- $x ^ { 2 } + 36$

A) $( x + 6 ) ( x - 6 )$
B) $( x - 6 ) ^ { 2 }$
C) $( x + 6 ) ^ { 2 }$
D) prime