indicate whether you agree with the following statements in italics, and explain your answer:
(a) Parallel shifts in the demand function can be used to identify the degree of market power being exercised in a market.
(B) Suppose that most of the city's consumption of a good is supplied by production within the city, and that most local production is sold to local consumers. We can conclude that this city is a geographic antitrust market for the good in question
(c) Contracts between a firm and its customers can be used to facilitate collusion
(d) Suppose that in a particular country, price fixing is not subject to criminal law; instead, if a cartel is caught, they are simply forced to dissolve the cartel and return to non-cooperative behavior. Such a policy cannot deter collusion because it does not involve a penalty (fines or imprisonment) for the cartel members.