An individual customer says the following to his broker: "Buy 100,000 shares of ABC stock whenever you think the time is best. This order is good unless I call you to cancel." Which statement is about the handling of this order? A. An executetrued power of attorney must be obtained from the customer prior to accepting the order
B. The order must be executed by the close of the market on that trading day
C. The order can be accepted as given, and can be executed at the discretion of the brokerage firm at any time or day
D. This order can only be accepted if the customer places it via fax or e-mail