Which of the Following Is a Basic Obligation or Right

Which of the following is a basic obligation or right of the buyer and seller concerning the payment for goods?

A) The price of the goods must be paid only in money,else the seller can consider the goods to be rejected by the buyer.
B) If there is no agreement for extending credit to the buyer,the buyer must pay for them on delivery.
C) If all or part of the price of goods is payable in real property,then both the transfer of goods and real property are covered by the law of sales of goods.
D) The buyer has the right to inspect the goods before payment under all circumstances. The buyer and seller may agree in their contract that the price of the goods is to be paid in money or in other goods,services,or real property.If all or part of the price of goods is payable in real property,then only the transfer of goods is covered by the law of sales of goods.The transfer of the real property is covered by the law of real property.The buyer can usually inspect the goods before payment except when they are shipped COD.