How can these certifications be managed on the Resource?

Technicians earn certifications that must be renewed periodically to ensure their skills remain up-to-date .

How can these certifications be managed on the Resource?
A . Add the Resource Skill and create Absenceonce expired
B . Add the Resource Skill and remove from the Service Territory once expired
C . Add the Resource Skill and set the End Date.
D . Add the Resource Skill and track certification using reminder.

Answer: C