About the architecture description of Hive in Fusioninsight HD, which of the following is error?

About the architecture description of Hive in Fusioninsight HD, which of the following is error?
A . If one Hiveserver is unavailable, the entire Hive cluster is unavailable.
B . Motastore is used to provide metadata services and depends on DBService
C . At the same time, if one of HiveServer is in Active state, the other is in Standby state
D . Hiveserver is responsible for receiving client requests, parsing, executing HQL commands and returning query results

Answer: A