Which three options determine when a contact could enter a journey?

The options that determine when a contact can enter a journey in Marketing Cloud's Journey Builder include:

A. Re-entry at any time: Contacts can re-enter the journey immediately after their previous participation ends.

D. No re-entry: Contacts are not allowed to re-enter the journey once they have entered it, regardless of whether they have completed it or not.

E. Re-entry only after exiting: Contacts can only re-enter the journey after they have fully exited, ensuring they complete all activities before re-entering.