medium · GMAT Quant

Which statement correctly describes 128 with respect to divisibility by 4?

1. It is divisible by 4 because 128 is an even number greater than two and ends in 8.
2. It is divisible only by the prime 2 and by no higher power of two whatsoever here.
3. It is not divisible by 4 because 128 is not an exact multiple of 8.
4. It is divisible by 4 because the last two digits form a number divisible by 4.
5. It is not divisible by 4 because its digits add up to 11, an odd sum.

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