The Main Difference Between Social Psychology and Other Scientific Disciplines

The main difference between social psychology and other scientific disciplines, such as physics, chemistry and biology, is:

A) the former studies human social behaviour while the others study non-organic phenomena and chemical and biological processes.
B) physics, chemistry and biology use the scientific method to study phenomena whereas social psychology does not.
C) physics, chemistry and biology discover facts about phenomena, whereas social psychology only proves or disproves hypotheses.
D) physics, chemistry and biology make future predictions, whereas social psychology makes historical rationalisations.