Please help find the answers for A, B, and C.

Based on the best available econometric estimates, the market elasticity of demand for your firm's product is -1.5. The marginal cost of producing the product is constant at $75, while average total cost at current production levels is $200. Determine your optimal per unit price if: Instruction: Enter your responses rounded to two decimal places. a. You are a monopolist $ b. You compete against one other rm in a Cournot oligopoly. $: c. You compete against 19 other rms in a Cournot oligopoly $