Generally, HRM Is More Difficult for International Companies for All

Generally, HRM is more difficult for international companies for all of the following reasons EXCEPT which one?

A) Dual career and family obligations make it tough to convince executives to leave the home office to join a foreign subsidiary.
B) Leadership styles and management practices are so similar from country to country that it is difficult to create a culture of innovation.
C) Complications arise due to enduring political, cultural, legal, and economic differences between countries.
D) Labor markets are dramatically different in the mix of workers, costs, and productivity.