Sales to customers who use bank credit cards, such as MasterCard and Visa, are generally treated as:

a. sales on account
b. sales returns cash
c. sales when the credit card company remits the cash

When the two countries did not specialize, the total production of jeans was 23 million pairs per month, and the total production of corn was 68 million bushels per month. because of specialization, the total production of jeans has increased by million pairs per month, and the total production of corn has increased by million bushels per month. because the two countries produce more jeans and more corn under specialization, each country is able to gain from trade?