Case $1$: Sarah was laid off while Jane kept her job because Sarah is older.

Case $2$: Sarah was laid off while Jane kept her job because Sarah performed less well.

In Case $1,$ we can say that there is $a(n)(1$ in employment.

In Case $2,$ we can say that there is in employement.

$(1)$ equality, $(2)$ discrimination

$(1)$ equity, $(2)$ equality

$(1)$ equity, $(2)$ discrimination

$(1)$ discrimination, $(2)$ equity