The rate of unemployment is a topic of microeconomics.

There are six firms in an industry, with market shares of 50 percent, 25 percent, 10 percent, 10 percent, 3 percent and 2 percent. The four firm concentration ratio is ________, and the HHI is ________

A) 100; 100 B) 95; 3338 C) 95; 10,000 D) 100; 3338

Refer to the above figure. A price support set at P3 will

A) lead to a surplus of Q3 minus Q1. B) lead to a shortage of Q3 minus Q1. C) lead to an equilibrium quantity of Q2. D) be ineffective.