When that person spams I guess
Answer: Cash in advance
Explanation: Cash in advance is a type of payment that is used in some trade agreements.
This method of payment will require a buyer to pay the seller in cash before a shipment is received and sometimes before a shipment is even made.
Cash in advance is a strategic form of payment that can be used in any transaction in where there is a delay between the sales agreement and the sales delivery.
In the scenario given in the question, we can see that the German company has already placed an order, but the company has also caused a delay in the transaction by requesting for extra modifications.
This will prompt EastSide Tractors to feel the need to safeguard their interests in case the German company should default. This is why a Cash in advance payment system will come into play.
Arvrage cost is the total cost divided by the number of units.