3- 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 equations are, (13 marks): JA=A+Y, K=A'x, Ja=B+x, K=xy, z=B+y a) Find the truth table. 4 marks b) Derive the state equations using k-maps. All equations should be f(A,B,x,y). 4 marks c) Draw the state diagram of the circuit. 3 marks d) Draw the logic diagram or sketch of the circuit. 2 marks