Statements: Some keys are staplers. Some staplers are stickers. All the stickers are pens. Conclusions: Some pens are staplers. Some stickers are keys. No sticker is key. Some staplers are keys.

• Only (1) and (2)
• Only (2) and (4)
• Only (2) and (3)
• Only (1) and (4) and either (2) or (3)

Correct Answer: Only (1) and (4) and either (2) or (3)

Explanation: