Identify the capitalized element in the following passage from the novel Bleak House by Charles wingspanens.

“Fog everywhere. FOG FLOWING UP THE RIVER, among green banks and meadows; fog rolling down the river, where it hangs defiled among the ships and buildings of a great (and dirty) city.”

A. Infinitive phrase

B. Prepositional phrase

C. Sentence fragment

D. Absolute phrase

D is what I thought but I'm not really sure?

Question

Identify the capitalized element in the following passage from the novel Bleak House by Charles wingspanens.

“Fog everywhere. FOG FLOWING UP THE RIVER, among green banks and meadows; fog rolling down the river, where it hangs defiled among the ships and buildings of a great (and dirty) city.”
   
 A.  Infinitive phrase

B.   Prepositional phrase

 C.  Sentence fragment

 D.  Absolute phrase

D is what I thought but I'm not really sure?