Which of the Following Statements Is True About Expatriates

Which of the following statements is true about expatriates?

A) Historically, multinational corporations (MNCs) have refrained from staffing key positions in their foreign affiliates with expatriates.
B) They are individuals from a host country who are assigned to work in the home country.
C) They are those who live and work outside their home country.
D) Multinational corporations (MNCs) find it advantageous to use expatriates because their salary and benefit package is less than that of host-country nationals.