Given the following set of events, show which routines the CPU is executing for times 0 to 100 ns. Each handler routine (with its interrupt request) takes 20 ns to complete. The priority of the interrupts ranges from IRQ6 as the highest priority interrupt to IRQ0 as the lowest priority interrupt.

Time	Action
0 ns	Start of main program
10 ns	IRQ5
25 ns	IRQ3
40 ns	IRQ4
50 ns	IRQ2

Time Action

0 ns: Start of Main Program

10 ns: IRQ5