Answer the following questions based on the tables below. Buyer A B C D E F G H I Willingness to pay for one unit $6 $27 $13 $21 $33 $35 $12 $13 $22 Seller A B C D E F G H I Willingness to sell one unit $21 $4 $30 $14 $12 $15 $51 $9 $23 Instructions: Enter your answers as whole numbers. a. The quantity demanded at $10 is units. The quantity supplied at $10 is units. b. The quantity demanded at $25 is units. The quantity supplied at $25 is units