Evaluate the Differential Is Exact $$\int _ { ( 1,1,1 ) } ^ { ( 5,3,4 ) } \frac { 1 } { x } d x + \frac { 1 } { y } d y + \frac { 1 } { z } d z$$

Multiple Choice

Evaluate. The differential is exact.
- $$\int _ { ( 1,1,1 ) } ^ { ( 5,3,4 ) } \frac { 1 } { x } d x + \frac { 1 } { y } d y + \frac { 1 } { z } d z$$

A) ln 60
B) ln 20
C) ln 12
D) 0