The Key Difference Between Gamson and Others' (1982) Obedience Studies

The key difference between Gamson and others' (1982) obedience studies and Milgram's studies from the 1960s was that

A) people conform less in the 1980s than the 1960s.
B) people conform more in the 1980s than the 1960s.
C) Milgram's participants were alone but Gammon's were in a group.
D) Milgram's participants were in a group but Gammon's were alone.