Which One of the Following Is a True Statement

Which one of the following is a true statement?

A) An investment bank is a financial firm that assists organizations in raising funds.
B) A corporation often deposits excess cash in an investment bank.
C) An investment bank provides checking services for large corporations.
D) Most investment banks help investors buy and sell a corporation's stock.
E) Under current laws, an investment bank provides services to individuals but cannot provide banking services to corporations.