Using the bankers algorithm:$1.$ Available $=(0,3,0,1)2.$ Available $=(1,0,0,2)$Determine whether or not each of the following states is unsafe. If the state is safe, show the order in which the processes may completed. Otherwise, explain why the state is unsafe$\mathrm{.}3.$ If a request from process P$1$ arrives for $(1,1,0,0),$ can the request be granted immediately?$4.$ If a request from process P$4$ arrives for $(0,0,2,0),$ can the request be granted immediately?