can you help me

Supply $1.60 Price 1.00 .50 Demand 0 130 200 290 Quantity Refer to the diagram. a) If the price is .50$, is there a shortage or surplus of this good? What is the amount of the shortage or surplus? b) If the government felt the need to eliminate the shortage/surplus, what could they do? c) Give an example of a situation where the government would set prices above or below equilibrium. Why would this be done? Is this good policy? Why or why not