Which of the following correctly describes manufacturing cycle time?

Which of the following correctly describes manufacturing cycle time?
A) the amount of time it takes from when an order is ready to start on the production line to when the product or service is delivered to the customer
B) the amount of time it takes to deliver a completed order to a customer plus its waiting time
C) the amount of time it takes from when a customer places an order for a product or requests a service to when the product or service is delivered to the customer
D) the amount of time it takes from when an order is ready to start on the production line to when it becomes a finished good plus its waiting time