In each case below, determine the effect on the sellers' total revenue and identify whether the demand curve in this particular market is elastic, inelastic, or unit-elastic in the relevant price range. a. When the price per package of a brand of chocolate chip cookies increases from $5 to $7, monthly quantity demanded decreases from 15,000 to 10,000 packages. Initial total revenue is $|60000 and final total revenue is $| 56000 . Demand is elastic b. A fall in the price of sugar from $7 to $4 per carton raises weekly quantity demanded from 20,000 to 25,000 cartons. Initial total revenue is $|125000 and final total revenue is $| 120000 . Demand is inelastic C. A rise in the quantity demanded of a monthly fashion magazine from 35,000 to 45,000 copies occurs when its newsstand price is reduced from $10 to $8. Initial total revenue is $|315000 and final total revenue is $ 320000 . Demand is elastic d. Daily quantity demanded of a particular model of earphones rises from 2,000 to 2,500 earphones if the price drops from $150 to $120. Initial total revenue is $ 360000 and final total revenue is $|360000 . Demand is (Click to select) v