Statements: (a) All pens are pencils. (b) No pencil is monkey. Conclusions: I. No pen is monkey. II. Some pens are monkeys. III. All monkeys are pens. IV. Some monkeys are pens.

Either conclusion II or III follows
Either conclusion II or IV follows
Only conclusion I follows
All conclusions follows

Correct Answer: Only conclusion I follows

Explanation:

First Premise is Universal Affirmative (A–type).
Second Premise is Universal Negative (E–type).
All pens are pencils. ↔ No pencil is monkey.
A + E = E-type of Conclusion "No pen is monkey".
This is Conclusion I.

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