Which one of the following is a possible result of simulation of sequential circuits?

Which one of the following is a possible result of simulation of sequential circuits? Correct Answer Timing diagrams

Simulation of a digital system can take place at several levels of detail. Simulation is a process by which a circuit is created virtually, run and the working is observed. For the simulation of a sequential circuit, the simulator output usually includes timing diagrams which show the times at which different signals in the circuit change.

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