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4. Clark is a monopolist with a constant marginal cost of production of MC -- 2. He has ten Type A customers, each of whom have a demand of MWTHQ) = 20 Q. and four Type B customers, each of whom have a demand 01' MWTHQ) = 10 ~ Q. (a) [4] Assuming Clerk can rst-degree price discriminate. clearly describe the optimal block pricing scheme to offer to each type of customer. To earn credit, you must clearly describe the block pricing scheme. (11) [4] Assuming Clerk can rst-degree price discriminate, clearly describe the optimal two-part tariff to other to each type of customer. To earn credit, you must clearly describe the two-part tariff