Why Is Management Control Particularly Complex in Decentralized Multinational Organizations

Why is management control particularly complex in decentralized multinational organizations?

A) Managers abroad are not as well-trained as managers of domestic operations.
B) Decision-making authority is not delegated to the local managers of foreign operations.
C) Managers of foreign operations may be motivated by local goals rather than parent's goals.
D) Financial risks are always higher for the local managers of foreign operations than for managers of domestic operations.