In Competing in Foreign Markets, Companies Find It Advantageous to Concentrate

In competing in foreign markets, companies find it advantageous to concentrate their activities in a limited number of locations when

A) there are significant scale economies in performing an activity.
B) the costs of manufacturing or other activities are significantly lower in some geographic locations than in others.
C) there is a steep learning or experience curve associated with performing an activity in a single location (thus making it economical to serve the whole world market from just one or maybe a few locations) .
D) certain locations have superior resources, allow better coordination of related activities, or offer other valuable advantages.
E) All of the above.