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 . multi-variant
C . single-variant
D . connected
E . Disconnected

Answer: B,C,E