1.  Statements: Some pens are books. Some books are pencils. 
Conclusions: 

1. Some pens are pencils. 
2. Some pencils are pens. 
3. All pencils are pens. 
4. All books are pens.

A. Only (1) and (3)
B. Only (2) and (4)
C. All the four
D. None of the four
E. Only (1)

Answer: Option D

Explanation: