Kimberley Needs to Convey to a Customer That His Shipment

Kimberley needs to convey to a customer that his shipment will arrive a week late.Which of the following lines should Kimberley use in communicating this news,most effectively?

A) We regret to inform you that your shipment will arrive a week late.
B) Due to unavoidable circumstances, your shipment has been delayed by a week.
C) Your shipment will be delivered next week.
D) We're sorry you will be receiving your shipment only after a week.
E) Your shipment will arrive next week, even though we promised that you would receive it this week.