Were Most White Northern Leaders Abolitionists

Were most white Northern leaders abolitionists?

A) no, however, there was very little hostility toward blacks on the part of whites in states where slavery had never existed
B) no, moral rejection of slavery was the dominant attitude among the working class, not the educated elite
C) no, the main factors underlying the Civil War were political and economic
D) yes, most Northern leaders were more interested in abolishing slavery than in sustaining the Union