Which two [2] items are required for you to connect to a CX500 via the serial port?

Which two [2] items are required for you to connect to a CX500 via the serial port?

A.
Crossover cable

B.
DB9 to RJ12 adapter

C.
Null modem cable

D.
RJ45 to DB9 adapter

E.
Straight thru cable