What are the configuration options for the child sites of multiple ERP systems in SAP Ariba Buying and Invoicing? Note: There are 3 correct answers to this question.

What are the configuration options for the child sites of multiple ERP systems in SAP Ariba Buying and Invoicing? Note: There are 3 correct answers to this question.
A . Cross-variant
B . Connected
C . Single-variant
D . Multi-variant
E . Disconnected

Answer: C,D,E