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A monopolistically competitive firm faces the following demand curve for its product: Price ($) 20 18 16 14 12 10 8 6 2 Quantity 10 20 30 40 50 60 70 80 90 100 The firm has total fixed costs of $100 and a constant marginal cost of $12 per unit. We can conclude that: (Hint: you need to calculate profits for the firm to be able to say whether we are in long- run equilibrium or whether there will be entry/exit. For this, first find the level of output the firm is producing). Select one: O a. firms will exit this market O b. firms will enter this market O c. the marker is in long run equilibrium O d. this firm is operation at its efficient scale