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’