B. To improve productivity and create options to use scarce resources including capital and labor more efficiently can be viewed as the contributions made by exporting companies.
C. Serving customers in different markets can reduce a firm's vulnerability to the loss of a local buyer and safeguard bargaining power with suppliers for an import company.
D. There are some problems caused by government regulations including language and culture, preferences for local goods/services, distribution channels, logistics expenses, product adaptation pressures, and different service norms.
E. All of the above.