Statements: All cats are mammals. No tigers are cats. Which conclusion follows?

ANo tiger is a mammal

BNo mammals are tigers

CCats are tigers

DNone of the above ✓ Correct

Correct answer: (D) None of the above

Explanation

None of the offered conclusions follows.

'All cats are mammals' and 'no tigers are cats' share the middle term cats.

Cats are excluded from tigers, but mammals extend well beyond cats.

Tigers may still lie inside the wider class of mammals.

So neither 'no tiger is a mammal' nor its converse can be drawn, and 'cats are tigers' is false.

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