What are valid custom function types in mappings within integration flows (iFlows)? Note: There are 3 correct answers to this question.

What are valid custom function types in mappings within integration flows (iFlows)? Note: There are 3 correct answers to this question.
A . Expression functions
B . Enterprise Application Archive (EAR) functions
C . Enterprise Java Beans (EJB) functions
D . Apache Camel Casting functions
E . Mapping functions

Answer: A,C,E