In the United States, a Cup of Hot Chocolate Costs

In the United States, a cup of hot chocolate costs $5. In a foreign country, the same hot chocolate costs 6.5 units of that country's currency. If the exchange rate were 1.3 units of foreign currency per U.S. dollar, what is the real exchange rate?

A) 1/2 cup of that country's hot chocolate per cup of U.S. hot chocolate
B) 1 cup of that country's hot chocolate per cup of U.S. hot chocolate
C) 2 cups of that country's's hot chocolate per cup of U.S. hot chocolate
D) None of the above is correct.