Which of the following correctly describes a difference between securities dealers and securities brokers? A :
Dealers hold inventories of securities, whereas brokers do not.

B :
Dealers are paid by buyers, whereas brokers are paid by sellers.

C :
Brokers hold inventories of securities, whereas dealers do not.

D :
Brokers are paid by buyers, whereas dealers are paid by sellers.

White truffles are a very prized and rare edible fungus that grow naturally in the countryside near alba, italy. suppose that it costs $200 per day to search for white truffles. on an average day, the total number of white truffles (t) found in alba is t = 20x − x 2 , where x is the number of people searching for white truffles on that day. white truffles can be sold for $100 each. if there is no regulation, how many more people will be searching for white truffles than the socially optimal number?