Correct Answer - Option 3 : D
Given,
Statement:
At the book fair, one author's books are displayed to the public
The prices of books are too high for a common man
Conclusion:
I. Layman only buys books from the exhibition → False (The first conclusion does not follow as a layman can buy books from anywhere)
II. Expensive panting is usually displayed at the art gallery → False (The second conclusion also does not follow as we do not have anything related to painting in the statement)
Here, we see neither conclusion I nor II follow.
Hence, the correct answer is D. Neither I nor II follow.