Which of the following statements about ZKFC is wrong?

Which of the following statements about ZKFC is wrong?
A . ZKFC (ZKFailoverController) is used as a client of Zookeeper cluster to monitor the status information of NameNode
B. The ZKFC process needs to be deployed in the NameNode node and Zookeeper’s Leader node
C. The Standby NameNode perceives the status of the Active NameNode through Zookeeper. Once the Active NameNode goes down, the Standby NameNode will perform the master promotion operation
D. The ZKFC of HDFS NameNode connects to Zookeeper, and saves information such as the host name in Zookeeper

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Answer: B