Why is the address field in a PPP header always set to “11111111”?

A.
PPP supports point-to-point networks only. The address field is fixed.

B.
PPP supports point-to-point networks only. The address field can change dynamically
since every station is assigned a PPP address.

C.
PPP supports multipoint access networks with many stations. The all 1’s acts as a
multicast.

D.
PPP supports multipoint access networks with many stations. The all 1’s acts as a
broadcast.