How are List-unsubscribes generated?

How are List-unsubscribes generated?
A . A recipient opts out by using the Unsubscribe link in the email header.
B. A recipient opts out by using the List-unsubscribe button at the top of the email client.
C. A recipient opts out by using the Unsubscribe link in the email footer.
D. A recipient changes his or her newsletter information in the account profile.

View Answer

Answer: B