A computer handles several interrupt sources of which of

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A computer handles several interrupt sources of which of the following are relevant for this question?
Interrupt from CPU temperature sensor
Interrupt from Mouse
Interrupt from Keyboard
Interrupt from Hard Disk

1. Interrupt from Hard Disk
2. Interrupt from Mouse
3. Interrupt from Keyboard
4. Interrupt from CPU temp sensor

Correct Option: D

We know that mouse pointer movements are more frequent than keyboard ticks. So its obvious that its data transfer rate is higher than keyboard. Delaying a CPU temperature sensor could have serious consequences, overheat can damage CPU circuitry. From the above information we can conclude that priorities are: CPU temperature sensor > Hard Disk > Mouse > Keyboard