Select which statement is correct. We say that the transmission is digital if and only if: (A) the transmission medium can transmit signals at several discrete voltage levels (B) the signal to be...

Extracted text: Select which statement is correct. We say that the transmission is digital if and only if: (A) the transmission medium can transmit signals at several discrete voltage levels (B) the signal to be transmitted must come from information(data) that is digital in nature (C) the transmission is concerned with the content and interpretation of the signal (D) a modulation technique must be used (E) none of the listed statements is correct. (A) is correct. (C) is correct. (D) is correct. (E) is correct. (B) is correct.