Refer to the graph below. At which point is average product (AP) at its maximum?

Protectionism

A) is the use of cheap labor to protect firms from paying high wages. B) refers to the use of copyright and trademark laws to protect inventors and artists from losing the rights to their creative efforts. C) is the use of trade barriers to protect domestic firms from foreign competition. D) refers to reductions in tariffs and other barriers that protect consumers from paying high prices.

Suppose a perfectly competitive firm's production function is q = L0.2K0.6 and it takes the wage and price as given. Then the firm's long-run demand for labor as a function of K, w, and p is

A) p5((0.2/w)2(0.6/r)3). B) p5((0.2/w)4(0.6/r)5). C) p5((0.2/w)5(0.6/r)4). D) p5((0.2/w)3(0.6/r)2).