Which of the following features are part of the business partner concept? Note: There are 3 correct answers to this question.
A.  Business partner, customer, and supplier can have different 
numbers. 
B.  You can assign the roles of both supplier and customer to an 
individual business partner.
C.  You can only maintain one address per business partner.
D.  Before conversion, you must merge the number ranges of 
your customers and your suppliers. 
E.  The customer and supplier master data tables are 
automatically updated in the background.