An IT professional recently assisted Ann, a customer, with updating her password and regaining access to a hijacked email account. Shortly afterward, Ann notices dozens of unwanted emails, thanking her for subscribing to an organization`s mailing list. Which of the following should be performed to remove and prevent any further emails from this organization? 

Answer options:

A. Click the Unsubscribe button on each unwanted email
B. Send the unwanted items to the spam or junk folder
C. Deploy an email address whitelist
D. Create domain-based filters

D