Acustomerhasarequirementtobuilda4nodecluster.Diskheartbeatingwillbeusedasthenon-IPnetwork.

Acustomerhasarequirementtobuilda4nodecluster.Diskheartbeatingwillbeusedasthenon-IPnetwork.Whatisthemaximumnumberofdiskheartbeatpoint-to-pointlinksonewouldneedtoimplementinordertoachievethehighestlevelofavailability？（）

A、4

B、6

C、8

D、12