D states that "none of Joan's friends likes Aurora perfume." We cannot properly conclude this from the information provided in the passage. We simply know that none of Joan's friends "likes the smell of Aurora as much as the smell of other perfumes." This does not mean that they don't like Aurora perfume, it simply means that they think other perfumes smell better.
Answer choice C must be true because we know that none of Joan's friends likes the smell of Aurora as much as the smell of other perfumes.
JF - > A < OP
A > OP - > not JF
We know that Professor Jameson thinks that Aurora smells better than any other perfume. From the contrapositive diagrammed above, we can conclude that Professor Jameson is not one of Joan's friends. This is directly restated by answer choice C, making it the correct answer.
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