A database administrator wants a unique IP address for each of three instances of a database. Normally，all instances run on a large production node，but they may fallover to different standby nodes according to the dynamic node priority configuration. What is the best way to obtain unique addresses for each of the three database instances？（）

A. There is no way since this cannot be configured with HACMP
B. Use IP Replacement address takeover and define all service addresses on the same NIC
C. Use IP Aliasing for address takeover and define each alias in a separate resource group
D. Use EtherChannel to map the three alias IP addresses to the common service address defined to HACMP