Completely Factor the Polynomial or State That the Polynomial Is $$9 x ^ { 2 } + 24 x t + 16 t ^ { 2 }$$

Multiple Choice

Completely factor the polynomial or state that the polynomial is prime.
- $$9 x ^ { 2 } + 24 x t + 16 t ^ { 2 }$$

A) $( 3 x + 4 t ) ( 3 x + 4 t )$
B) prime
C) $( 3 x - 4 t ) ( 3 x - 4 t )$
D) $( 9 x + 4 t ) ( x + 4 t )$