Wait, wait, wait. If all the records in A were also in B, then the total number of records in C should be 100 + 200 - 200 = 100. Something's not right here. I'm going to have to think about this one a little more.
Hey, this is a bit of a brain teaser! If all the records in A were also in B, then C would have 300 records. But since C only has 200, that means there must have been some overlap. Option B is the way to go, I think.
This is a tricky one. If A and B were mutually exclusive, then the combined population C should have 300 records, not 200. I'm going to go with option B.
Okay, let's think this through. If A has 100 records and B has 200 records, and the combined population C has 200 records, then option B must be correct. All the records in A are also in B.
Hmm, I'm not sure about this one. If the combined population C has 200 records, it seems like some of the records from A and B must have been duplicates. I'm leaning towards option B, but I'm not 100% confident.
Monroe
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