Explanation
C: The Log Shipping Report displays the status of any log shipping activity whose status is available from the server instance to which you are connected.
E: The history and status of the backup operation are stored at the primary server, and the history and status of the copy and restore operations are stored at the secondary server.
The log_shipping_monitor_error_detail table stores error details for log shipping jobs. You can query this table see the errors for an agent session. Optionally, you can sort the errors by the date and time at which each was logged. Each error is logged as a sequence of exceptions, and multiple errors (sequences) can per agent session.
References:
https://docs.microsoft.com/en-us/sql/database-engine/log-shipping/view-the-log-shipping-report-sql-server-mana
https://docs.microsoft.com/en-us/sql/database-engine/log-shipping/monitor-log-shipping-transact-sql