During $2021,$ it cost Oriole, Inc. $$16$ per unit to produce part T$5.$ During $2022,$ it has increased to $$19$ per unit. In $2022,$ Crane Company has offered to provide Part T$5$ for $$8$ per unit to Oriole. As it pertains to the make$-$or$-$buy decision, which statement is true?

Select answer from the options below

Differential costs are $$11$ per unit.

Incremental costs are $$8$ per unit.

Incremental revenues are $$3$ per unit.

Net relevant costs are $$8$ per unit.