What is the effect of syntax in these lines from Bleak House by Charles wingspanens?
Fog everywhere. Fog up the river, where it flows among green aits and meadows; fog down the river, where it rolls defiled among the tiers of shipping and the waterside pollutions of a great (and dirty) city.
A. It emphasizes the inescapable nature of the fog shrouding the city.
B. It suggests that the characters' lives are dull and the weather is bad.
C. It conveys that the characters' minds are clouded by doubt and suspicion.
D. It cautions against an impending danger looming over the characters’ lives.

Question

What is the effect of syntax in these lines from Bleak House by Charles wingspanens? 
Fog everywhere. Fog up the river, where it flows among green aits and meadows; fog down the river, where it rolls defiled among the tiers of shipping and the waterside pollutions of a great (and dirty) city.
A. It emphasizes the inescapable nature of the fog shrouding the city.
B. It suggests that the characters' lives are dull and the weather is bad.
C. It conveys that the characters' minds are clouded by doubt and suspicion.
D. It cautions against an impending danger looming over the characters’ lives.