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Question 10 (1 point) The marginal revenue curve for a monopolist the market demand curve. ( a) always runs parallel (b) always rises above c) always is the same O d) always lies beneathQuestion 11 (1 point) For a pure monopoly to exist, (a) there are a few sellers in a given industry (b) there is only one seller, therefore no industry ( c) there are limited sellers in a particular industry (d) there is a single seller in a particular industryQuestion o (1 point) An is calculated by subtracting the firm's costs from its total revenues, (a) accounting profit; including opportunity cost (b) economic profit; excluding opportunity cost Oc) accounting profit; excluding opportunity cost O d) opportunity cost; including economic profit