During a planning session， it is determined that a three node cluster （Node ’A’， Node ’B’， and Node ’C’） will meet the customer’s application needs. Node ’B’ will be a hot-standby fallover node for both Node ’A’ and Node ’C’ resource groups.  A serial network for this cluster will require which connections？（）  

A、 A single serial network between Node ’A’ and Node ’B’ and Node ’C’

B、 A point-to-point link between Node ’A’ and Node ’C’，and Node ’B’ and Node ’C’

C、 A serial network between Node ’A’ and Node ’C’，and a serial network between Node ’B’ and Node ’C’

D、 A point-to-point link between Node ’A’ and Node ’B’ Node ’B’ and Node ’C’ and Node ’A’ ad Node ’C’

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