The bid-ask spread on a security is the difference between:
A. the price of the security when an individual sells it and the price of a security when an investment bank sells the security.
B. the price a dealer pays for a security and the price at which the company sells the security.
C. the price at which a dealer buys and sells the security.
D. the difference between the security's price in the initial public offering and the security's price when it sells on the stock exchange.