When processing freight invoices for a project, the project manager notices the shipping costs exceeded the budget due to increased fuel costs. The risk manager included this risk in the project's contingency allowance. When reviewing the project budget execution reports, the project manager notices unused budget remaining in other closed tasks of the project that could cover the additional shipping costs. What should the project manager do? Process the freight invoices at higher shipping costs against the project's contingency allowance. Process the freight invoices for the budgeted amount and hope the shipping company will forgive the difference. Request a formal change order from the customer to increase the project's total budget. Ask the project sponsor to cover the additional shipping costs on the company's reserves account