Given the following set of events

Given the following set of events , show which routines the CPU is executing fortimes O to 100 ns . Each handler routine ( with its interrupt request ) takes 20 ns tocomplete . The priority of the interrupts ranges from TROG as the highest priorityinterrupt to IRO as the lowest priority interruptTimeActionOnSStart of main program10 nsRO25 1isIRQ440 1isIRQG50 nsIR Q3TimeActionOnsStart of Main Program10 sIRQI