Please answer a, b and c for both transaction schedules.

S1 R1(X); R2(Y); W1(Y); W2(Z); R3(Z); W3(X) S2-R1(A); R3(B); W1(A); R2(C); R2(A); W3(B); W2(A); R3(A), R1(B); W2(C); W1(B) For each schedule- a) Draw the precedence graph. b) State whether the schedule is conflict serializable c) If it is conflict serializable, provide the serial schedule or if it is not, briefly explain why