Which of these command sequences will send an email to [email protected] using SMTP?

Which of these command sequences will send an email to [email protected] using SMTP?
A. MAIL FROM:<[email protected]>
RCPT TO: < [email protected]>
MESSAGE
B. MAIL FROM:<[email protected]>
RCPT TO: < [email protected]>
DATA
C. HELO invalid.com
MAIL FROM : < [email protected] >
RCPT TO: < [email protected] >
BODY
D. HELO invalid.com
MAIL TO: < [email protected] >
MESSAGE
END