would the 90-45 be the correct choice?

P ONWAUDINOUS S1 SO ..... Demand 0 10 20 30 40 50 60 70 80 90 100 Q Suppose that the market is initially at an equilibrium price of $6 and an equilibrium quantity of 40 units. If the government decides to add a $2 per-unit tax on this good, producer surplus will fall from: 160 to 80. 90 to 45. O 80 to 45. 160 to 90