Final answer:
The unit for one million bytes is 'Megabyte' (MB). Hence the correct answer is option A
Step-by-step explanation:
The prefix 'Milli' represents one thousandth (1/1000). So when it is used before the unit 'byte', it represents one thousandth of a byte. Therefore, the unit for one million bytes is 'Megabyte' (MB).
Hence the correct answer is option A