In order to test ClusterXL failovers which command would you use on one of the ClusterXL nodes to initiate a failover?

In order to test ClusterXL failovers which command would you use on one of the ClusterXL nodes to initiate a failover?
A . clusterXL_admin down -p
B . cluster XL_admin up -p
C . cphaprob -d TEST -s ok register
D . cphaprob -d TEST -s problem unregister

Answer: A

Explanation:

Reference: https://sc1.checkpoint.com/documents/R76/CP_R76_ClusterXL_AdminGuide/7298.htm#o97358