Use the following to answer questions 1 - 2: Which of the above diagrams correctly portray a pure monopolist's demand (D) and marginal revenue (MR) curves? A B C D Which of the above diagrams correctly portray the demand (/}) and marginal revenue (MR) curves of a purely competitive seller? A B C D The MR = MC rule: applies only to pure competition. applies only to pure monopoly. does not apply to pure monopoly because price exceeds marginal revenue. applies both to pure monopoly and pure competition. Use the following to answer questions 4-5: