Factor the Trinomial Completely $7 n ^ { 2 } + 2 n - 3$

Multiple Choice

Factor the trinomial completely. Indicate if it is not factorable using integers. $7 n ^ { 2 } + 2 n - 3$

A) $( n + 3 ) ( 7 n - 1 )$
B) $( 7 n + 3 ) ( n - 1 )$
C) $( 7 n - 3 ) ( n + 1 )$
D) $( n - 3 ) ( 7 n + 1 )$
E) not factorable