2. Consider the following execution behavior of processes P1, P2, P3, and P4 and resources R1, R2, R3, R4 and R5 with one instance each. [CO3, C4, Marks: 7] P1 P2 Request R2 Request R5 Request R3 Request R3 Release R2 Request R4 Release R3 Release R4 Release R5 Release R3 P3 Request R1 Request R4 Release R4 Release R1 P4 Request R1 Request R2 Release R2 Release Ri a) Find an execution sequence that results in deadlock if processes P1, P2, P3 and P4 run simultaneously and draw R.A.G for that execution sequence. Page 1 b) State a sequence of process execution that will ensure that all these processes finish executing properly