Douglass would later work to persuade President Abraham Lincoln to take a stronger stand in favor of ending enslavement—rather than just limiting its growth. Why did the author include this sentence

A. To criticize Abraham Lincoln for not being a fiercer abolitionist
B. To show the opinions of Frederick Douglass and Abraham Lincoln
C. To make clear that Frederick Douglass had a large influence
D. To tell readers how presidents of the United States must be persuaded