The Printer Event

$1$ P$1$ requests and is allocated the printer R$1.$

$2$ P$1$ releases the printer R$1.$

$3,P2$ requests and is allocated the disk drive $R2.$

$4,$ P$2$ releases the disk R$2.$

$5$ P$3$ requests and is allocated the plotter R$3.$

$6$ P$3$ releases the plotter R$3.$

Assume that the events in the accompanying narrative take place. Which of the following statements is true?

There is no deadlock.

Event $4$ caused deadlock.

Event $5$ caused deadlock.

Event $6$ caused deadlock.

Last saved $10$:$23$:$38$ AM

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