This looks like a straightforward question on calculating the Spearman's rank correlation coefficient. I'll need to rank the hotels by both sales performance and customer review scores, then calculate the difference in ranks for each hotel and plug that into the formula.
Okay, let's see here. The version pragma helps make it clear for which compiler version the smart contract was developed. That makes sense to me and aligns with option A. I think that's the right answer.
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