A.In predictive coding, differentiate between DPCM and ADPCM. B. In JPEG, explain why we need to round the result of division in the quantization step. C. Explain why the combination of...

B. In JPEG, explain why we need to round the result of division in the quantization step.

C. Explain why the combination of quantization/dequantization steps in JPEG is

a lossy process even though we divide each element of the matrix M by the corresponding value in matrix Q when quantizing and multiply it by the same value when dequantizing.

D. In multimedia communication, assume a sender can encode an image using only JPEG encoding, but the potential receiver can only decode an image if it is encoded in GIF. Can these two entities exchange multimedia data?