The Project Manager is in the process of finalizing a vendor based on proposals received in the Bid Conference. This project has several externalities.The PM just came out of a meeting with the sponsor who wants to reduce the project cost and needs to know how to cut down the external costs?Which option you would recommend as a PM:

A. Develop one project plan, and share responsibility with vendor for the delivery B. Create two project plans & delegate delivery responsibility to reliable external resource C. Build a single project plan and take full responsibility for the delivery of the project D. Have two project plans, and delegate the delivery responsibility to capable and highly experienced internal resource