S: R3(A); R1(B); W2(D); R2(B); R2(D); R1(B); W3(C); R2(A); W4(C); R1(B); R2(A); R3(D); R4(B); R3(D); W1(C); R4(C); R4(B); R3(A); R2(C); R1(B); R4(D); R2(B); R4(B); R4(C); R3(B); R2(C); R2(A); R1(A); C3; C1; C2; 24; 5. State whether the schedule above is recoverable, cascadeless, and strict. Explain your reasons. (15 pts)