The following statement about ZKFC, which is wrong?

The following statement about ZKFC, which is wrong?
A . ZKFC (ZKFailoverController) is used as a client of the ZooKeeper cluster to monitor the status information of the NameNode.
B . The ZKFC process needs to be deployed in the node of the NameNode and the Leader node of the ZooKeeper.
C . Standby NameNode senses the status of the Active NameNode through ZooKeeper. Once the Active NameNode rock machine,
D . Standby NameNode will perform the main operation.
E . HDFS NameNode ZKFC is connected to ZooKeeper, and the host name and other information is saved to ZooKeeper.

Answer: B