What are the features of business activity?

What are the features of business activity?
A . It implements the logical action on a particular business object type.
B . It is a configuration object that is associated with a change request type.
C . If it is associated with more than one change request, the user must specify the required change request.
D . It provides a list of UI applications available in MDG, which can be used as source or target U

Answer: A,B,C