5. Which of the following are direct foreign investments, and which are not?

a. A Saudi businessman buys $10 million of IBM stock.

b. The same businessman buys a New York apartment building.

c. A French company merges with an American company; stockholders in the U.S.

company exchange their stock for shares in the French firm.

d. An Italian firm builds a plant in Russia and manages the plant as a contractor to the Russian government.