Statements: some engineers are writers; no writer is an actor; all actors are engineers. Conclusions: I some writers are engineers; II all engineers are actors; III no actor is a writer; IV some actors are writers. Which option follows?
The existential overlap in statement 1 is symmetric, so I holds. Disjointness of writers and actors is symmetric, so III holds. Statement 3 cannot be reversed to infer II; IV contradicts statement 2. Thus **I and III, C**.
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