Which statement best explains how the infinitive is used in the sentence? I read the Spider-Man comic book to compare the movie plot with the original story written by Stan Lee.

A. The infinitive written by functions as a verb giving action to Stan Lee.
B. The infinitive to compare functions as an adjective that describes the movie plot
C. The infinitive to compares functions as an adverb that modifies the verb read.
D. The infinitive written by functions as a prepositional phrase describing Stan Lee.