Which of the Following Is a Limit of the Convention

Which of the following is a limit of the convention system that was used to nominate political party candidates? 

A)  Convention meetings were unorganized and unstructured. 
B)  A much narrower range of leaders were nominated than the caucus system of nominating. 
C)  Most of America's geographic areas remained unrepresented at these conventions. 
D)  Direct participation of ordinary voters in selecting delegates resulted in mob rule. 
E)  Convention delegates were rarely chosen by a vote of the party's local members.