Which of the following is a correct statement regarding payment in a contract for the sale of goods transaction?

Select one:

a. The buyer and seller may not agree in their contract that the price of the goods is to be paid in services.

b. If there is no agreement for extending credit to the buyer, the buyer must pay for them on delivery.

c. The buyer and seller may not agree in their contract that the price of the goods is to be paid in other goods.

d. As a general rule, the buyer cannot inspect the goods before payment.

In a contract where there is no agreement between two parties for delivery in installments, all the goods _____.

Select one:

a. must be delivered at the seller's discretion

b. must be delivered to the buyer in a single delivery

c. must be delivered in the installments at the seller's discretion

d. must be delivered in reasonably spaced intervals