A 5-bit ripple counter uses JK flip-flops. If the propagation delay of each flip-flop is 50 nanoseconds, then which of the following is/are correct?
1) The total propagation delay of the counter is 250 nanoseconds.
2) The total propagation delay of the counter is 200 nanoseconds.
3) The total propagation delay of the counter is 150 nanoseconds.
4) The total propagation delay of the counter is 100 nanoseconds.
