Which of the Following Is True of Leased Line Networks

Multiple Choice

Which of the following is true of leased line networks?

A) Network traffic is moved through a special-purpose computer called a modem.
B) Only predefined sites can use leased lines.
C) T2 speeds can be supported by regular telephone wires.
D) If a network has n sites,as many as n+n additional lines need to be leased.