Which of the following is true about the seller's duty of delivery?

A.The contract of sale requires the seller to deliver the goods to the buyer's place of business.

B.If the goods are covered by a negotiable warehouse receipt, the buyer must indorse the receipt.

C.The buyer is required to officially notify the seller once he receives the goods.

D.The seller's basic obligation is to tender delivery of goods that conform to the contract with the buyer.