Factor the Expression Completely $8 r ^ { 2 } - 16 r s - 90 s ^ { 2 }$

Multiple Choice

Factor the expression completely. $8 r ^ { 2 } - 16 r s - 90 s ^ { 2 }$

A) $\quad ( 2 r + 9 s ) ( 4 r - 10 s )$
B) $\quad ( 9 r - 2 s ) ( 4 r + 10 s )$
C) $( 2 r - 9 s ) ( 4 r + 10 s )$
D) $\quad ( 2 r - 9 s ) ( 10 r + 4 s )$