During a planning session， Company.com expresses concern about the behavior of the nodes  When HACMP is installed. Once department is reliant on an older piece of equipment that is critical to operations and must communicate to the database server. Previous network changes indicated that this piece of equipment does not support gratuitous ARP.  How can HACMP best incorporate this restriction into the cluster design？（）  

• A、 The administrator must use Hardware Address Take over with HACMP.
• B、 The clsmuxpd process and the contents of the /etc/cluster/ping_client_list can address the issue.
• C、 HACMP does not have any facility to be compatible with older devices that have limited capabilities.
• D、 HACMP can use either hardware address take over，or clinfo can update the arp cache of the clients when an adapter event occurs.