Which of the following resources are relevant to inject Contacts into the journey using the REST API?

Certification Aid created a journey and event definition in Marketing Cloud.

Which of the following resources are relevant to inject Contacts into the journey using the REST API? Choose 2.
A . POST /eventDefinitions/key:{key} or /eventDefinitions/{id}
B. POST /interaction/v1/events
C. POST /interaction/v1/interactions/contactentry
D. GET /eventDefinitions/key:{key}

Answer: B,C