In Context of the Problems Faced When Entering Foreign Markets

In context of the problems faced when entering foreign markets, which of the following refers to political uncertainty?

A) Differences in communication, spatial boundaries, perception of time, and behavior
B) Unstable governments, social unrest, and armed conflict
C) Differences in language, customs, norms, and customer preferences
D) Economic conditions and policies of a country that could harm a firm's operations within a country