According to the Text, Lawrence and Lorsch's Concept of Differentiation

According to the text, Lawrence and Lorsch's concept of differentiation is best summarised as:

A) the extent to which units within an organisation differ because of environmental influences.
B) how an organisation achieves its own identity and recognition from customers in competitive situations.
C) the need to increase the number of departments to better interact with changing environmental pressures.
D) the shift from simple reciprocity to pooled interdependency in turbulent environments.