An architect is config

An architect is configuring a PowerHA cluster in the following way：The cluster will consist of two nodes. Each node will have two boot interfaces configured as a single PowerHA network. The cluster is to have asingle resource group with a single service address.Heartbeating over aliased is not to be used. What is the minimum number of subnets required to implement this cluster？（）

• A1
• B2
• C3
• D4