In the 70s, Researchers in Sweden (Johanson and Wiedersheim-Paul, 1975)

In the 70s, researchers in Sweden (Johanson and Wiedersheim-Paul, 1975) identified that most firms followed a four-stage process of internationalization, starting with serving the domestic market, then penetrating foreign markets by exporting, then developing sales offices in the foreign market, and then developing foreign production facilities. This model, often referred to as:

A) Regional approach.
B) Geocentric approach.
C) Polycentric approach.
D) Uppsala model.