Unlike Day Orders, a Good-Til-Cancelled (GTC) Order Is an Order

Unlike day orders, a good-til-cancelled (GTC) order is an order to buy or sell a security at a specific or limit price that lasts until the order is completed or cancelled. Which of the following are true?

A) A GTC order will not be executed until the limit price has been reached, regardless of how many days or weeks it might take.
B) Investors often use GTC orders to set a limit price that is far away from the current market price.
C) Some brokerage firms may limit the time a GTC order can remain in effect and may charge more for executing this type of order.
D) All of the above are true