Why is E the answer?

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So I got the answer correct but I want to make sure the elimination step I used is correct, or could it get me into trouble? The two conclusions I found both had "some" in them so I immediately omitted A & B because they didn't have the "some" anywhere in them. Is that a good deduction? I ask this question because I generally get the diagramming correct but the amount of time I'm taking is going to hurt me on the LSAT so I am working on my speed by trying to eliminate 2 to 3 answer choices with minimal work/time. Hope this question makes sense. Thanks in advance!

@villageidiot you can definitely use that technique but just be aware that it is possible that the correct answer choice is not a deduction you have made but rather a restatement of a sentence set forth in the stimulus. Hope that helps! Please let us know if you have any other questions.