Mass Mail Contacts option doesn't appear under the Tools section in the Contacts tab, what could have caused this?

Mass Mail Contacts option doesn’t appear under the Tools section in the Contacts tab, what could have caused this?

Mass Mail Contacts option doesn’t appear under the Tools section in the Contacts tab, what could have caused this?
A . The user Role is insufficient to view this tool
B . Email is unchecked for that profile in FLS
C . This is a bug and must be escalated
D . Mass mail is not enabled for the profile.
E . Mass mail is not checked in FLS

Answer: B,D