Show That $\mathrm { F }$ Is Conservative, and Find a Function

Multiple Choice

Show that $\mathrm { F }$ is conservative, and find a function $f$ such that $\mathbf { F } = \nabla f$ , and use the result to evaluate $\int _ { C } \mathbf { F } \cdot d \mathbf { r }$ , where $C$ is any curve from $A \left( x _ { 0 } , y _ { 0 } , z _ { 0 } \right)$ to $B \left( x _ { 1 } , y _ { 1 } , z _ { 1 } \right)$ .
$\mathbf { F } ( x , y , z ) = 24 x ^ { 3 } y \mathbf { i } + \left( 6 x ^ { 4 } + 4 y z ^ { 2 } \right) \mathbf { j } + 4 y ^ { 2 } z \mathbf { k } ; A ( 0,0,0 )$ and $B ( 0,0 , - 2 )$
Select the correct answer.

A) $- 89$
B) 0
C) $- 154$
D) $- 107$