17. Answer all parts (a)-(c) of this question. (a) [8 marks] Explain the concept of market power and its relationship with the elasticity of demand. (b) [10 marks] Explain the short and long-run equilibrium of a monopolistically competitive market. Use diagrams to illustrate your answer. (c) [7 marks] Suppose a monopolist faces 2 different consumers for its product. Consumer A has willingness to pay for one unit of the good equal to £100, while consumer B's willingness to pay for the same unit if £150. The monopolist faces zero costs of producing the good. Each consumer demand only 1 unit. The monopolist knows the consumers' willingness to pay. What is the maximum profit the monopolist can get by charging a uniform price (i.e. the same price for both consumers)? What is the profit of the monopolist if it can price discriminate? Under which circumstances the monopolist my not be able to price discriminate? Explain.