Factor the Trinomial Completely $x ^ { 2 } + 50 x + 625$

Multiple Choice

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

A) (x + 25) (x - 25)
B) $( x - 25 ) ^ { 2 }$
C) $( x + 25 ) ^ { 2 }$
D) prime