Factor the Following Polynomial Completely $25 a ^ { 2 } + 5 a s - 2 s ^ { 2 }$

Multiple Choice

Factor the following polynomial completely. $25 a ^ { 2 } + 5 a s - 2 s ^ { 2 }$

A) $( 5 a - s ) ( 5 a + 2 s )$
B) $( 5 a + s ) ( 5 a - 2 s )$
C) $( 5 a - s ) ( 5 a - 2 s )$
D) $( 5 a + s ) ( 5 a + 2 s )$
E) none of these