Consider different activities related to email.m1:Send an email from a mail client to mail serverm2:Download an email from mailbox server to a mail clientm3:Checking email in a web browserWhich is the applicable level protocol user in each activity?

• A. m1:SMTP, m2:FTP, m3:HTTP
• B. m1:HTTP, m2:SMTP, m3:POP
• C. m1:POP, m2:SMTP, m3:IMAP
• D. m1:SMTP, m2:POP, m3:HTTP