Evaluate the Double Integral by First Identifying It as the Volume

Multiple Choice

Evaluate the double integral by first identifying it as the volume of a solid. $\iint _ { R } ( 15 - 2 x ) d A , R = \{ ( x , y ) \mid 3 \leq x \leq 7,4 \leq y \leq 5 \}$

A) $120$
B) $- 180$
C) $220$
D) $20$
E) $- 80$