Answer:
Option (C) is correct.
Step-by-step explanation:
Dealers profits come from the bid-ask spread in a dealer market. The bid-ask spread is a premium that come from bearing the risk. Most of dealers buy specific securities in wholesale and sell it in retail. The dealer's profit is the difference between the maximum purchase price made by the buyer and the least price at which seller wants to sell their securities. Hence, the difference between these two terms represents the dealer's profit that is bid-ask spread.