An analog signal is digitized and stored in a file. For digitizing with 5 bits, if data rate is 90 Kbps and the total time of the signal is 43 min, which answer is correct? O a. Frequency = 10,50 KHz File Size = 810 Kbit O b. Frequency = 9,00 KHz File Size = 1,62 Mbit O C. Frequency = 11,00 KHz File Size = 1,82 Mbit O d. Frequency = 18,00 KHz File Size = 3,24 Mbit O e. Frequency = 4,50 KHz File Size = 1,61 Mbit