Factor Completely $9 x^{2}+64$ A) $(3 x+8)^{2}$ B) $(3 x-8)^{2}$ C) $(3 x+8)(3 x-8)$

Multiple Choice

Factor completely. If the polynomial cannot be factored, write "prime."
- $9 x^{2}+64$

A) $(3 x+8) ^{2}$
B) $(3 x-8) ^{2}$
C) $(3 x+8) (3 x-8)$
D) Prime