When tuning a network module what is the purpose of the grace period？（）

• A、It defines the maximum permissible time period between missed heartbeats before a failure is detected
• B、It defines the time period to wait to activate the network module after starting the cluster manager
• C、It defines the period between detecting a missed heartbeat and initiating a network down， allowing thenetwork to stabilize
• D、It defines the time period during which， after a network failure was detected， further network failures of thesame type will be ignored