What distinguishes an independent basic service set (IBSS) from an infrastructure basic service
set (BSS)?

A.
An IBSS does not have a distribution system (DS), but a BSS does.
B.
An IBSS does not require beacon frames, but a BSS does.
C.
An IBSS does not support 802.11 authentication or association, but a BSS does.
D.
An IBSS can only operate on a single channel, but a BSS can operate on multiple channels.