You are an administrator of an active\/passive cluster of MAG Series devices running in mixed- mode configuration (IF-MAP server and authenticating users). The active user count is quickly approaching the maximum limit of the cluster. You have been directed to reconfigure the cluster to an active\/active cluster and add a new license to increase the total number of active users the cluster can support.What must you do before changing the cluster configuration?（）
A. Apply the new license to the passive node of the cluster.
B. Configure an external load balancer to hold the V IP.
C. Disable the active node in the cluster.
D. Remove the IF-MAP server configuration.
参考答案：D
