Factor the Polynomial Completely $y ^ { 2 } + 50 y + 625$

Multiple Choice

Factor the polynomial completely. If the polynomial cannot be factored, write "prime."
- $y ^ { 2 } + 50 y + 625$

A) (y + 25) (y - 25)
B) $( \mathrm { y } + 25 ) ^ { 2 }$
C) $( \mathrm { y } - 25 ) ^ { 2 }$
D) Prime