A synchronous TDM combines 7 digital sources; 1 with a bit rate of 145 bps, 4 with a bit rate of 150 bps and 2 with a bit rate of 300 bps. Given the interleaved unit is 1 byte. An extra bit is added to each output frame for synchronization. Answer the followings: a) Identify the best multiplexing strategy that can be used to handle a disparity in the input rates. (2 marks) b) With an aid of the diagram, show the multiplexing process. (4 marks) c) What is the input duration? (2 marks) d) What is the frame size? (1 mark) e) What is the frame rate? (2 marks) f) What is the frame duration? (2 marks) g) What is the data rate of the link? (2 marks)