Which of the Following Is TRUE About a Serial Port

Multiple Choice

Which of the following is TRUE about a serial port controller and a fibre channel (FC) bus controller?

A) Both FC bus controller and serial port controller are often implemented as separate circuit boards.
B) A serial-port controller is a simple device controller, while an FC bus controller is complex.
C) Both FC bus controller and serial port controller are used in PCs.
D) All of the above.