The Primary Distinction Between an Interest Group and a Political

The primary distinction between an interest group and a political movement is that

A) an interest group concerns itself with only a small segment of society, while a political movement looks to improve everyone's condition.
B) interest groups are more narrowly focused on specific policy goals than political movements are.
C) interest groups have broader and more numerous support than political movements.
D) interest groups consist of formal organizations, whereas political movements consist solely of spontaneous gatherings.
E) interest groups focus solely on influencing politicians, whereas political movements focus solely on changing social norms.