please let me know what letter is the answer. A B C or D.

19. Which of the following statement is true? a. Stocks have a maturity of less than 1 year b. Money market instruments have maturity of more than 1 year c. Marketing refers to the speed with which an asset can be converted into cash without a loss of value. d. In a firm offering underwriting, the members of the underivriting syndicate purchase the entire issue