An attacker scans a host with the below command. Which three flags are set? (Choose three.)

#nmap -sX host.domain.com

A. This is ACK

scan. ACK flag is set

B. This is Xmas scan. SYN and ACK flags are set

C. This is Xmas scan. URG, PUSH and FIN are set

D. This is SYN scan. SYN flag is set