In This Text, a Distinction Has Been Made Between "Little

In this text, a distinction has been made between "little p" psychology and "big P" Psychology.At its simplest level, what is the difference?

A) Little p psychology is our everyday sense of our own private lives, while big P Psychology embodies the formal scientific and professional approach to human experience.
B) The terms indicate that there is no relationship between the two.
C) Little p psychology refers to pseudoscience, while big P Psychology refers to "real" science.
D) None of the above