The Iterated Integral $\int _ { 0 } ^ { 4 } \left[ \int _ { 0 } ^ { y } d x \right] d y$

Multiple Choice

The iterated integral $\int _ { 0 } ^ { 4 } \left[ \int _ { 0 } ^ { y } d x \right] d y$ is

A) 8
B) 12
C) 14
D) 16
E) 18