Which Transact-SQL statements should you run?

You have been tasked to delete a number of Database Mail messages that have been sent.
You need to delete all the emails that were sent more than one month ago.
Which Transact-SQL statements should you run?

A.
DECLARE @OneMonthAgo datetime = DATEADD(mm,-1,GETDATE())
EXEC msdb.dbo.sysmail_delete_log_sp @OneMonthAgo

B.
DECLARE @OneMonthAgo datetime = DATEADD(mm,-1,GETDATE())
EXEC msdb.dbo.sysmail_delete_mailitems_sp @OneMonthAgo

C.
DECLARE @OneMonthAgo datetime = DATEADD(mm,-1,GETDATE())
EXEC msdb.dbo.sysmail_delete_log_sp @OneMonthAgo,’Success’

D.
DECLARE @OneMonthAgo datetime = DATEADD(mm,-1,GETDATE())
EXEC msdb.dbo.sysmail_delete_mailitems_sp @OneMonthAgo,’Sent’