The T5 part costs $21 per unit for Hanson to produce. Waugh Company has offered to sell the T5 part for $16 per unit to Hanson. As it pertains to the make-or-buy decision, which statement is true?

Group of answer choices:

Differential costs are $5 per unit

Incremental costs are $2 per unit.

Incremental revenues are $3 per unit.

Net relevant costs are $2 per unit.