When You Hear ____ During Post,you Know That You Have

Multiple Choice

When you hear ____ during post,you know that you have a problem with serial or parallel ports or system timer,which probably means the motherboard must be replaced.

A) Two beeps
B) Three beeps followed by three, four, or five beeps
C) Four beeps followed by two, three, or four beeps
D) One beep followed by three, four, or five beeps