I put A but I did it because I thought the number of solution pairs of A was infinite given I was counting decimals. Does distinct solution pairs HAVE to mean integer?
Yes, in this specific problem, (a, b) are both stated to be integers. That means when it asks for “distinct (a, b) solution pairs,” it’s only asking about integer solutions, not decimals or fractions.
So we’re only looking for pairs of integers that make the equation true.