Offered in the junior year, Advanced Placement Language and Composition seeks to prepare students to become skilled readers in a variety of genres, periods, disciplines, and rhetorical contexts. (2) Besides providing students continuous practice in writing essays of many types and lengths, the readings offer wide perspectives of periods and areas of interest. (3) This hard class includes lots of things written by American writers and a ton of stuff about America. (4) In addition, students are exposed to a variety of non-fiction forms including speeches, letters, diaries, political treatises, editorials, memoirs, and personal essays.
Read the paragraph taken from a formal class description. Choose the sentence in which the language is informal.

A) Sentence 1
B) Sentence 2
C) Sentence 3
D) Sentence 4