The project sponsor requires a formal sign-off on the product of the project, but the customer tells the project manager during a conference call that everything is ready to go. The project manager should: Group of answer choices Access the conference call system to see if the conversation was recorded and save the recording. Make arrangements to meet the customer at a convenient location to have him sign the document. Tell the sponsor that the customer has verbally approved the delivery. Get the customer's signature when the team conducts product installation and post-delivery assessment