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No Tooth Fairies Are Clumsy Buffoons

Question 21

Multiple Choice

No tooth fairies are clumsy buffoons. Therefore, it is false that all tooth fairies are clumsy buffoons.

A) Invalid, existential fallacy.
B) Invalid, illicit contrary.
C) Invalid, illicit subalternation.
D) Valid.
E) Invalid, illicit subcontrary.

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