What Role Did the Black Convention Movement Play in the Abolitionist

What role did the Black Convention Movement play in the abolitionist movement?

A) It had no role at all, since whites cracked down on the organization and refused to allow it to meet.
B) It was a very conservative force, arguing that white supremacy should be acceptable if whites were kind to blacks.
C) It called for violent uprisings to slaughter slaveholders in the South.
D) It provided a forum for antislavery ideas and the development of black leadership.