Some A are non-B. (T) All A are non-B.
A) Subalternation. (T)
B) Subcontrary. (Und.)
C) Contraposition. (Und.)
D) Subalternation. (Und.)
E) Contradictory. (F)

Question

Quizplus · Accepted Answer

From the given statement "Some A are non-B," we cannot be certain that all A are non-B, but we can infer that at least some A are non-B. Therefore, using the Subalternation rule, we can say that "All A are non-B" is undetermined (or unknown) as it is not necessarily true based on the given information. Choice D reflects this relationship.

Some a Are Non-B