ABC Software is a producer of educational software for children below the age of twelve. The company has operations in Switzerland and would like to expand its foreign operations with a new facility in China. The company's financial advisors recommend that ABC Software conduct most of its business in a vehicle currency. Which of the following is true of vehicle currencies?

Select one:

a$.$ A vehicle currency is a contract that requires the exchange of an agreed$-$upon amount of a currency on an agreed$-$upon date at a specific exchange rate.

b$.$ The U$.$S$.$ dollar, Australian dollar, Japanese yen, and British pound are all examples of vehicle currencies.

c$.$ The U$.$S$.$ dollar became a vehicle currency after World War II when all of the world's major currencies were tied indirectly to the dollar because it was the most stable currency.

d$.$ The Chinese yuan is expected to become a vehicle currency in the near future as China's position in world trade continues to grow.