Which are requirements in the definition part of the class?

You want to define an ABAP Managed Database Procedure (AMDP).

Which are requirements in the definition part of the class? There are 2 correct answers to this question.
A . The AMDP method has at least one exporting parameter.
B . The AMDP method is defined as a a static method.
C . The class implements interface if_amdp_marker_hdb.
D . All parameters of the AMDP method are passed by value.

Answer: C,D