The command to configure COM1 on IRQ 4, default ioports and all other standard parameters is

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  1. setserial /dev/ttyS0 irq 4 autoconfig

  2. setserial /dev/ttyS0 irq 4

  3. setserial /dev/ttyS1 irq 4 autoconfig

  4. setserial /dev/ttyS1 irq 4

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Correct Option: A

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