A sequential circuit has two JK flip-flops A and B, two inputs x and y, and one output z. The flip-flop input equations and circuit output equation are JA = Bx + By KA = Bxy JB = A'x Kb = A + xy' z= Ax'y' + Bx'y' (a) Derive the state equations for A and B. (b) Draw the logic diagram of the circuit. (c) Draw the state table. (d) Draw the state diagram