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Monthly purchases in a market for smartphones are shown in the below table. Quantity Price 900 600 120 300 U U 180 1:40 18 a. Find sellers' total revenue at each price. Sellers' total revenue is $ [ million at a price of $900, $ million at a price of $600, $ million at a price of $300. and $ million at a price of $0. b. In the price range $900 to $600 the market demand curve for smartphones is (Click to select) , since price and total revenue (Click to select) In the price range $600 to $300 the market demand curve for smartphones is (Click to select) , since price and total revenue (Click to select) In the price range $300 to $0 the market demand curve for smartphones is (Click to select) , since price and total revenue (Click to select) c. Calculate the numerical values of the price elasticity of demand, ed, in the three relevant price ranges. Enter your responses below rounded to two decimal places. Include a minus sign (-) In front of any negative values. Do not round your Interim calculations before obtaining the final solution (Le. do not clear your calculator). Between prices $900 to $600, the numerical values of the price elasticity of demand is Between prices $600 to $300, the numerical values of the price elasticity of demand is