Answer:
The correct answer is letter "C": a reasonable price.
Step-by-step explanation:
A reasonable price is set based on the value of the goods or services provided including other factors such as its availability, delivery time, quality, and payment terms. The term tends to be confused with the lowest price but both of them do not mean the same.
Thus, if there is no specified price in an offer sale, both parties assume the goods will be sold at a reasonable price on the date of the delivery.