(Choose 1 answer)
Which argument is NOT valid?
A. Any hardworking student gets good result in class. An did not get good result in class. Therefore An was not working hard.
B. Anyone in class understands logics. An is a student in class. Therefore An understands logics.
C. Any computer science major must take Discrete Mathematics. An is taking Discrete Mathematics.
Therefore An is a computer science major.
D. Any student of FPT university lives in the dorm. An is living in a house. Therefore An is not a student of FPT university.
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