Robert is considering taking up a new managerial position with a total annual compensation of $$80,000.$ The managerial role is very similar to his current role. The total annual compensation in his current position is $$60,000.$ Therefore, the implicit cost of taking up the new managerial position is $\_\_\_\_\_.$

Multiple choice question.

$$20,000$

$$0$

$$60,000$

$$80,000$