I need right choose

For a transmission medium, the bandwith is given as 120 KHz, maximum capacity is achieved by using 6 bits. According to this information which answer is correct? O a. SNRdb = 31 Max Capacity = 1,30 Mbps O b. SNRdb = 28 Max Capacity = 1,20 Mbps O C. SNRdb = 39 Max Capacity = 1,70 Mbps O d. SNRdb = 36 Max Capacity = 1,44 Mbps O e SNRdb = 36 Max Capacity = 1,50 Mbps