At Rusty Springs Ltd, a new online order system is being designed for its registered customers. Each customer has an account, allowing them to order…

At Rusty Springs Ltd, a new online order system is being designed for its registered customers. Each customer has an account, allowing them to order from a pre-populated form containing details of their purchases in the previous three months. The customer simply ticks which previous purchases they would like to re-order, confirms delivery details and approves the purchase. A Rusty Springs administrator updates the purchase details on the system on a monthly basis and the sales manager gets an automated order from the system within two hours of the purchase. A business analyst has written a use case entitled 'Key Customer Purchases Springs', which includes the following lines: A) The customer has logged onto the system and wishes to purchase springs. B) The customer adds a new product code onto the system. C) Only the registered customer can make an order. D) The system returns the previous purchases. Which of the following is correct?