18 Refer to Graph 2. At $20, the market for D2 is _____. A graph of a price chartDescription automatically generated Selected:a. in a shortageThis answer is incorrect. b. in a surplus c. at equilibrium d. none of the above 0/1 Question 19 Refer to Graph 2. At $10, the market for this good is _____. A graph of a price chartDescription automatically generated a. in a surplus for only D1 market b. in a surplus for D1 and D2 markets Selected:c. in a shortage for only D1 marketThis answer is incorrect. d. in a shortage for D1 and D2 markets