What Is the Main Disadvantage of Hiring Local Nationals in the Sales

What is the main disadvantage of hiring local nationals in the sales force?

A) Headquarters personnel tend to ignore the advice of local nationals.
B) Most local nationals are costly to maintain.
C) Poaching of experienced personnel by competitor companies increases.
D) Cultural differences lead to communication issues with customers.
E) Lack of familiarity with distribution systems and referral networks plagues local nationals.