3. An analog data signal contains frequencies from 2000 Hz to 8000 Hz. We wish to convert this to a digital signal using Pulse Code Modulation. Assume that each sample will be rounded to the closest of 128 possible values before being sent to the receiver. a. What is the minimum sampling rate according to the Nyquist Theorem? b. How many bits are required to represent each value? C. Assuming the bits/sample and sampling rate calculated above, what is the bit rate