In digital communication, Inter Symbol Interference (ISI) is a form of distortion where one symbol interferes with subsequent symbols. An eye diagram is used to study the extent of ISI in a communication channel. Which of the following is FALSE?

• A. The eye diagram can be observed in an oscilloscope
• B. Width of the eye-opening indicates an interval where the wave can be sampled without ISI
• C. Height of the eye-opening at a specific sampling time defines the margin over the noise
• D. Band-limiting the channel helps to reduce ISI