The answer would be A. I just did this yesterday. Do you want the steps?
The first 4 on the left has a value of 400. The next 4 has a value of 40. The first 4 is in the hundreds place and the second 4 is in the 10's place.
The answer is 5x^2y. The lowest exponent would be the GCF for each term if it has one
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