Answer: B
Step-by-step explanation:
luxury appropriate to Malétroit’s privileged class
A : No indication except coat of arms
barrenness to spotlight Malétroit himself
B : maybe after all he is "little" and their are mostly only windows and doors mentioned
darkness as a metaphor for Malétroit’s personality
I do not see any indication of darkness (their are windows).
darkness as a metaphor for Malétroit’s personality
C strangeness akin to Denis’ own discomfort
Do we know he is disconformable... no their is no indication.
D : Poverty at odds with the family coat of arms
Lack of furnisher does not indicate poverty; furthermore it is a "large" room not small