Suppose there are three buyers of candy in a market: Tex, Dex, and Rex. The market demand and the individual demands of Tex, Dex, and Rex are shown in the table below. a. Fill in the table (gray shaded cells) for the missing values. b) Which buyer demands the most at a price of $7? C) Which buyer's quantity demanded increases the least when the price is lowered from $7 to $6? d) Which direction would the market demand curve shift if Tex withdrew from the market? What if Dex doubled his purchase at each possible price? e) Suppose that at a price of $6. the total quantity demanded increases from 20 to 30 units is this a " change in the quantity demanded