Television channels are 6 MHz. How many bits can be sent if four level digital signals are used (assume a noiseless channel)?

Television channels are 6 MHz. How many bits can be sent if four level

1.	Television channels are 6 MHz. How many bits can be sent if four level digital signals are used (assume a noiseless channel)?
A.	24 Mbps
B.	12 Mbps
C.	6 Mbps
D.	36 Mbps
Answer» B. 12 Mbps