This question is incomplete. Here's the complete question.
Read The Landlady
, By Roald Dahl (1959)
What is abnormal about the boys in the guest-book?
A. Billy went to school with them.
B. They have uncommon names.
C. They are celebrities.
D. They sound familiar to Billy
Answer: D. They sound familiar to Billy
Explanation:
When Billy found the guest-book, and after signing it himself, he realized that the only two other names on that page, Christopher Mulholland and Gregory W. Temple, sounded extremely familiar to him.
He even expresses astonishment about the fact that they seem connected in his mind, and he´s sure he saw them in the newspapers.