c. is easy to manage because of common operating decisions across borders.
Explanation:
It depends on the work that the firm is doing but a global strategy is not always high risk and in fact sometimes it becomes easier to manage a firm with the same kind of approach in absence of variables to undermine the said type of business across different borders.
In general different businesses across countries adopt this strategy for better management as global outreach is paramount in the times of global networking and globalization.