A project manager is using a subcontractor for mobile application development. When the project team tests the application, they realize it does not comply with the new company user-interface standards. Even though these new standards were not included in the statement of work (SOW), the subcontractor agrees to the additional scope as long as payment for this additional work is paid immediately. What should the project manager do? Initiate a change to incorporate an immediate payment milestone in the contract as per the subcontractor's request. Negotiate new pricing based on the revised estimations from the subcontractor that reflect the new work. Deny the subcontractor's payment request, because the product does not comply with the project needs and close the project. Initiate a change request and review the contract to evaluate the payment options before responding