Producer surplus is best defined as . a. the profit of producers when they make more goods than are demanded
b. the profit of producers when there are too many producers for a certain demand in a market
c. the profit that producers make above the cost of production
d. the intangible profits producers make in addition to the goods they sell

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.

answer(b) partnership';

answer$22,000 ;