What is the constraint associated with machine $2$ for the following assignment problem?

Job

$\backslash$table$[[,,$Machine$],[,,\frac{1}{2},\frac{3}{3},],[$A$,$$$3,$$$4,$$$2,],[$B$,$$$1,$$$3,$$$5,],[$C$,$$$6,$$$4,$$$2,]]$

Let $x_{ij}=1$ if job $i$ is assigned to machine $j,$ otherwise $0.$

$x_{A2}+x_{B2}+x_{C2}=+1$

$x_{A2}+x_{B2}+x_{C2}=0$

$x_{A2}+x_{B2}+x_{C2}=-1$

$4x_{A2}+3x_{B2}+4x_{C2}=+1$

$4x_{A2}+3x_{B2}+4x_{C2}=-1$