How Does Social Psychology Differ from Sociology

How does social psychology differ from sociology?

A) Social psychology is the study of societal level variables,whereas sociology is focussed on more specific and immediate variables.
B) Social psychology studies human behaviour at the level of the individual,whereas sociology studies human behaviour at the group level.
C) Social psychologists more often rely on participant observation than sociologists.
D) Social psychologists are less likely than sociologists to rely on experimentation to study human behaviour.