Price Quantity Demanded Marginal Revenue $20 0 - $16 1 $12 2 [A] $8 3 [B] $4 4 [C] $0 5 [D] Assume a firm in monopolistic competition that sells custom stickers has a demand schedule defined in the above table. What is the marginal revenue of the second sticker sold (i.e. find the value of [A] in the table above)? Group of answer choices $24 $6 $8 $12