If Possible, Factor the Polynomial Completely $$25 x ^ { 2 } + 20 x y + 4 y ^ { 2 }$$

Multiple Choice

If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.
- $$25 x ^ { 2 } + 20 x y + 4 y ^ { 2 }$$

A) $( 5 x + 2 y ) ^ { 2 }$
B) $( 25 x + y ) ( x + 4 y )$
C) $( 5 x + 2 y ) ( 5 x - 2 y )$
D) $( 5 x - 2 y ) ^ { 2 }$