Consider the arrival time and CPU burst time statistics for the following six processes in a Shortest Job First $($SJF$)$ CPU scheduler:

ProcessArrival TimeCPU BurstP$1$t$5$P$2$t$+23$P$3$t$+41$P$4$t$+67$P$5$t$+89$P$6$t$+105$

Assume that the CPU is free at time t and starts executing the above processes. Determine the schedule of process execution. What is TRUE about the order of execution of these six processes?

Question $3$ options:

P$4$ is the last process to execute

P$6$ is the last process to execute

P$5$ is the fifth process to execute

P$5$ is the last process to execute