Evaluate the Integral by Changing the Order of Integration in an Appropriate

Multiple Choice

Evaluate the integral by changing the order of integration in an appropriate way.
- $$\int _ { 0 } ^ { 1 } \int _ { 0 } ^ { 7 } \int _ { y } ^ { 7 } \frac { x \sin z } { z } d z d y d x$$

A) $\frac { 1 - \cos 7 } { 2 }$
B) $\frac { 1 + \sin 7 } { 2 }$
C) $1 + \cos 7$
D) $1 - \sin 7$