(Solved): 4. [30] Assume there are five processes, P1 through P5 and four resources: R1 (6 instances), R2 (7 ...

4. [30] Assume there are five processes, P1 through P5 and four resources: R1 (6 instances), R2 (7 instances), R3 (14 instances), R4 (12 instances). Available: R1: 2, R2: 1, R3: 2, R4: 0 (a) Is this system currently deadlocked, or can any process become deadlocked? Why or why not? If not deadlocked, give an execution order. (b) If a request from a process P1 arrives for $(0,4,2,0)$, can the request be immediately granted? Why or why not? If yes, show an execution order. (c) If a request from a process P2 arrives for $(0,1,2,0)$, can the request be immediately granted? Why or why not? If yes, show an exceution order.