You are using Database Mail to deliver email notification and are notified that an employee has not been receiving emails.
You need to determine if any email notifications sent by Database Mail have been unsuccessful.
Which object from the msdb database should you use?

A.
msdb.dbo.sysmail_event_log

B.
msdb.dbo.sysmail_sentitems

C.
msdb.dbo.sysmail_unsentitems

D.
msdb.dbo.sysmail_faileditems