What is the expected behavior if an automation rule is NOT set to repeat?

What is the expected behavior if an automation rule is NOT set to repeat?
A . The prospect can match the criteria multiple times and the action runs each time.
B . The action can only run once per day on the prospect.
C . The prospect matches the criteria once, but the action runs multiple times.
D . The prospect matches the criteria once and the action runs once.

Answer: C