Difference between A and C

Hi Alannadels, For parallel reasoning questions, I like to "anonymize" the stimulus. We can do this as follows. Most Y are X If Y - Z Thus at least one X and Z Answer choice A could be diagrammed as follows. If UC -> T Most D are UC Thus some D UC Although the order of the first two statements are flipped, the overall logic is exactly the same. C can be diagrammed as Most D are UC If UC - T Thus If D - T The conclusion here is entirely different, this is an absolute, while the stimulus was only a some.