Factor as Completely as Possible $$25 x ^ { 2 } + 36$$

Multiple Choice

Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.
- $$25 x ^ { 2 } + 36$$

A) $( 5 x + 6 ) ^ { 2 }$
B) Prime
C) $( 5 x + 6 ) ( 5 x - 6 )$
D) $( 5 x - 6 ) ^ { 2 }$