1.  Statements: Some keys are staplers. Some staplers are stickers. All the stickers are pens.
Conclusions: 

1. Some pens are staplers. 
2. Some stickers are keys. 
3. No sticker is key. 
4. Some staplers are keys.

A. Only (1) and (2)
B. Only (2) and (4)
C. Only (2) and (3)
D. Only (1) and (4) and either (2) or (3)

Answer: Option D

Explanation: