In September $20$X$1,$ Pinkston's Promotional Products contracted to sell $500$ engraved insulated tumblers to The Hampton Hotel for $$4,500($ $$9$ per tumbler$).$ Pinkston's cost for each tumbler is $$6.$ One hundred tumblers are to be delivered to Hampton each month beginning October $1,20$X$1.$ On November $3,$ after $200$ have been delivered, the contract is modified. Pinkston commits to delivering an additional $700$ products for an additional $$6,650($ $$9\mathrm{.}50$ per tumbler$).$ If the contract modification does not result in a separate performance obligation, how is revenue from the delivery of the tumblers recognized in November?

The revenue for the $100$ tumblers delivered in November is calculated using the average of the original selling price and the standalone price in the contract modification.

The revenue for the $100$ tumblers delivered in November is calculated using a blended price of the original contract and the price of the contract modification.

The revenue for the $100$ tumblers delivered in November is calculated using the original contract price.

The revenue for the $100$ tumblers delivered in November is calculated using the selling price specified in the contract modification.