Which two statements are true about the DSCP field in an IP header? (Choose two)

A.
DSCP is the most significant six bits of the DS field

B.
DSCP is the least significant six bits of the DS field

C.
DSCP is used to select the type of service (ToS)

D.
DSCP is used to select a per-hop behaviour (PHB)

E.
DSCP is broken into four sub0fields

F.
DSCP is broker into five sub-fields

Explanation:
Page 120-121, IP Telephony Self-Study Cisco DQOS Exam Certification Guide, http//www.ciscopress.com/title/1587200589