You are in the early stages of proposing an HPE GreenLake solution. As part of this solution, the customer wants to reduce the company's carbon footprint but has significant work to do to improve their data center facility's efficiency. Which solution might you recommend to address this concern? A - using HPE Right Mix Advisor to make a sustainability plan B - using certified, preowned HPE hardware in the solution C - under-provisioning the solution by about 10 percent D - deploying the solution as HPE GreenLake with colocation