Question: In an interrupt - driven I / O system, what does the CPU do after it receives an interrupt signal from a peripheral? It continues

In an interrupt-driven I/O system, what does the CPU do after it receives an interrupt signal from a peripheral?
It continues executing the current task.
It ignores the interrupt until the task is complete.
It pauses its current task, handles the interrupt, and resumes.
It waits for the device to complete its task.

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