Which one of the following statements regarding LANs and WANs is NOT true?

a$.$

Point$-$to$-$point WANs and switched WANs are two distinct examples of WANs.

b$.$

A switched WAN connects two communicating devices through a transmission medium.

c$.$

LANs are for example spanning an office, a building or a campus.

d$.$

A LAN interconnects hosts.