What Does the Term Intersectionality Refer To

What does the term intersectionality refer to?

A) The study of the intersection between multiple ways of dividing people into social categories
B) The study of the interpersonal processes that unfold when people of different genders interact
C) The study of what happens to people's emotional processes when their gender identity clashes with their behavior
D) Scientific endeavors that bridge across disciplines, such as research that combines psychology and gender studies