Review the below graph:For a first-degree price discriminating monopoly, the producer surplus is? (Round your answer to the nearest dollar)

100- O MC 90- a 80- 70- (P # $60, Q = 30) Price 50- (P = $45, Q = 45) 40- 30- 20- 10- EMR D O- 0 10 20 30 40 50 60 70 80 90 100 Quantity