QUESTION 6 (20 MARKS) 6.1 What is the lowest price and therefore implied output that a firm can practicing perfect first-degree price discrimination (3 marks) 6.2 Explain how price discrimination affects the earnings of a car salesperson (3 marks) 6.3 With the aid of a graph describe in what way consumer welfare can be affected by the second-degree price discrimination of electrical utilities (5 marks) 6.4 Explain whether third-degree price discrimination be effective if the different groups of consumers have different levels of demand but the same price elasticities