A product line is a group of products that are physically similar or are intended for a similar market. Which of the following is the best example of a product line? a. Sony offers DVD players, televisions, computers and video games.
b. Hyundai produces ocean-going vessels, plants and machinery, automobiles, steel and electronic products.
c. Coca-Cola produces Coca-Cola, Diet Coke, Sprite and Fanta.
d. United Technologies produces elevators, furnaces and helicopters.

In which of the following games is it clearly the case that the cooperative outcome of the game is good for the two players and bad for society? a. two oil companies own adjacent oil fields over a common pool of oil, and each company decides whether to drill one well or two wells.b. two airlines dominate air travel between city a and city b, and each airline decides whether to charge a "high" airfare or a "low" airfare on flights between those two cities.c. two superpowers decide whether to build new weapons or to disarm.d. in all of the above cases, the cooperative outcome of the game is good for the two players and bad for society