A graph of a Demand and a Supply curve with quantity on the horizontal axis and price in dollars on the vertical axis. The supply curve with a positive slope originates perpendicular to the origin while a demand curve with a negative slope extends from a price of 4 dollars on the vertical axis to 8 units on the horizontal axis. The supply and the demand curves intersect at a quantity of 4 units and a price of 2 dollars as denoted with dashed lines at price and quantity demanded combination. Points are marked on the supply and the demand curves corresponding to a dashed line from 1 dollar that intersects the supply and demand curves corresponding to a quantity of 2 and 6 respectively. Points are also marked on the demand and the supply curves corresponding to a dashed line from 3 dollars that intersects the demand and supply curves corresponding to a quantity of 2 and 6 respectively. At a price of $3, quantity supplied is _____ and quantity demanded is _____, leading to a _____ units. Question 9 options: 4; 2; shortage of 2 2; 4; surplus of 2 6; 2; surplus of 4 2; 6; shortage