It is false that all water sprites are charming nymphs. Therefore, some water sprites are not charming nymphs.
A) Invalid, illicit subalternation.
B) Invalid, illicit subcontrary.
C) Invalid, existential fallacy.
D) Valid, no fallacy.
E) Invalid, illicit contrary.

Question

Quizplus · Accepted Answer

The argument is valid because it correctly infers from the negation of a universal statement ("It is false that all water sprites are charming nymphs") to the existence of a counterexample ("some water sprites are not charming nymphs"), without committing any logical fallacy.

It Is False That All Water Sprites Are Charming Nymphs