A sequential circuit with two D flip-flops A and B, one input Y, and one output Z is specified by the following input equations: A(t+1)=B(t)Y+A(t)Y,B(t+1)=Y,Z=A(t)B(t). (a) [3 marks] Draw the logic diagram of the circuit. (b) [3 marks] Obtain the state table. (c) [3 marks] Obtain the state diagram