Which of the Following Statements About Denmark Vesey's Conspiracy Is

Which of the following statements about Denmark Vesey's conspiracy is LEAST accurate?

A) Although Vesey himself was a free man,he conspired with an African conjuror to win freedom for other southern blacks.
B) Vesey was inspired by congressional debates over the admission of Missouri as a slave state as well as international revolutionary ideologies.
C) Vesey's plot was the first major insurrection of the nineteenth century,and the only one which federal troops had to assist in putting down.
D) White authorities thwarted the conspiracy before it could be effectively begun,and executed almost 50 blacks for their involvement.