Three file servers, an unmanaged switch, an unmanaged UPS (Uninterruptible Power Supply),
one KVM (keyboard/video/mouse) switch, one keyboard, one monitor, and one mouse are
installed in a server rack.
How many KVM (keyboard/video/mouse) cable sets are needed to connect the servers to the
KVM (keyboard/video/mouse) switch?

A.
four

B.
three

C.
one

D.
two

E.
five