One issue to consider when investing in assets in foreign countries is:

a. that local currency may weaken to the dollar causing adverse effects on the investment's return.

b. that dollars may be difficult to exchange into local currency causing problems in receiving any return on investment.

c. that local currency may be difficult to exchange into dollars causing problems in receiving a return on the investment.

d. that the dollar may weaken to the local currency causing adverse effects on the investment's return