What Is an Accurate, Helpful Description of HPE GreenLake

What is an accurate, helpful description of HPE GreenLake?

A) HPE GreenLake is a fully customizable, consumption-based IT solution, which gives customers pay-as-you-go funding.
B) HPE GreenLake offers customers fully customized IT solutions that can be funded via a lease or subscription.
C) HPE GreenLake is an environmental initiative that lets customers pool their hardware in one "lake", to simultaneously cut spending and prevent unnecessary manufacturing pollution.
D) HPE GreenLake is an AI-based security solution that equips customers with the firmware-level protection they need for their legacy infrastructure.