When selling downloadable software, e-books, and music streaming platforms, the marginal cost of making one more unit is basically zero. The average total cost is currently $1 per book. If a monopoly is operating in this market and is maximizing profits, marginal revenue is Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a Greater than $0 b Less than $0 d SO $1 e There is not enough information to answer this