The Total Producer Surplus for a Good CANNOT Be Calculated

The total producer surplus for a good CANNOT be calculated as the:

A) sum of the individual producer surpluses for all sellers of the good.
B) area below the supply curve for the good up to the quantity of the good sold.
C) area above the supply curve and below the price that sellers receive for the good being sold.
D) sum,for all sellers of the good,of the difference between what each seller receives and the minimum amount he or she is willing to accept for selling the good.