Three devices are attached to a microprocessor: Device 1 has highest priority and device 3 has lowest priority. Each device’s interrupt handler takes 5 time units to execute. Show what interrupt handler (if any) is executing at each time given the sequence of device interrupts displayed below.

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Device 1 Device 2 | Device 3 I | vit. + + + + 5 10 15 20 25 8- + 30 35 40