Norman owns a caf. Norman's caf sells only one type of coffee. The fixed cost of the caf per month is $10,000. The selling price of each cup of coffee is $5 and the variable cost per cup of coffee is $1. In the month of April, Norman's caf sold 3900 cups of coffee. At the end of April, has the caf broken even? If so, write the positive NOI, if not, enter the negative net operating loss.