Let R Be the Rectangle Consisting of All Points (X $\iint _ { R } 4 x ^ { 2 } y ^ { 2 }$

Multiple Choice

Let R be the rectangle consisting of all points (x, y) such that 0 ≤ x ≤ 3, 0 ≤ y ≤ 1.
Calculate $\iint _ { R } 4 x ^ { 2 } y ^ { 2 }$ dy dx.

A) 15
B) 24
C) -12
D) 12