Company.com is planning for an HACMP cluster and wants to know more about the network requirements. The plan is to use IPAT via IP aliasing and heartbeating via IP aliasing to preserve the corporate IP addresses. Currently the customer uses a separate VLAN for each individual subnet.  Which statement best describes how HACMP co-exists with VLAN’s in this configuration？（）   

• A、 All subnets in use by HACMP must be in the same VLAN.
• B、 All subnets in sue by HACMP must be in a different VLAN.
• C、 HACMP does not support multiple subnets when using heartbeating via IP aliasing.
• D、 HACMP does not support the use of VLAN.