In Which of the Following Situations Would the Seller's Right

In which of the following situations would the seller's right to stop delivery continue?

A) Where the buyer receives the goods
B) When a negotiable document of title for the goods is negotiated to the buyer
C) When a bailee of the goods has not yet acknowledged to the buyer that he holds the goods for the buyer
D) When the carrier acknowledges to the buyer that he holds the goods for the buyer as a warehouser