3. A sequential circuit has two D flip flops A and B, two inputs x and y, and one output z. Behavior of the circuitis described by the following next-state and output equations:A(t+1) = Ay' + xyB(t+1) = B'x' + xy'z = A'(x+y)a. Determine the circuit type: Mealy of Moore?. Justify your answer.b. Draw the logic diagram of the complete sequential circuit. Assume that external inputs are available in bothtrue and complemented forms.c. Give the 1-D state table, and the state diagram using the same state layout specified for problem 2 above.