Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility of
both OFDM and HR/DSSS? (Choose 2)

A.
HR/DSSS (802.11b)

B.
OFDM (802.11a)

C.
ERP (802.11g)

D.
HT (802.11n)

E.
CCK (802.11b)

F.
PBCC (802.11g)