When Countries Have Varied Definitions for What Constitutes Bribery, What

When countries have varied definitions for what constitutes bribery, what should an employee do to ensure appropriate behavior when working abroad?

A) Have a clear understanding of what is allowed in the visiting country.
B) Follow the company's policies and procedures.
C) Use their own ethical guidelines for what is right.
D) Do what is best for the company to achieve its goals.