Q9

The following are some events that occur after a device controller issues an interrupt while process $L$ is under execution. P. The processor pushes the process status of $L$ onto the control stack Q. The processor finishes the execution of the current instruction R. The processor executes the interrupt service routine S. The processor pops the process status of $L$ from the control stack T. The processor loads the new PC value based on the interrupt Which of the following is the correct order in which the events above occur?