Level of economic prosperity

Which of the following would be added to U.S. national income?

a. an American consumer buying French wine b. an American business selling aircraft to British Airways c. a Swedish firm selling mobile phones to Americans d. a French firm buying a Swedish cellular phone

The larger the marginal propensity to consume (MPC), the larger the percentage of disposable income that people consume rather than save, and the larger is the ultimate increase in real GDP from an initial increase in aggregate expenditure such as government spending

Indicate whether the statement is true or false