$8.[$Mod $8]$ At $\backslash ($ x$=0\backslash ),$ a long straight wire carries current $31$ into the plane of the paper. At $\backslash ($ x $\backslash )\backslash (=-$D $\backslash ),$ another long straight wire carries current $21$ out of the plane of the paper. What is the direction of the force on the wire at $\backslash ($ x$=-$D $\backslash )?$ @Rutgers University $2024$

a$.$ In the positive $\backslash ($ x $\backslash )$ direction

b$.$ In the negative $\backslash ($ y $\backslash )$ direction

c$.$ Along the length of the wire, out of the page

d$.$ In the positive y direction

e$.$ In the negative $\backslash ($ x $\backslash )$ direction