What is a green data centre ?

Options

A. A data centre created by environ mentalists, to keep record of green technology, clean production techniques
B. A repository for the storage, management and dissemination of mechanical, lighting, electrical and. computer systems developed to optimize energy efficiency and environmental impact
C. A data centre for green building for optimizing of power consumption using energy efficient technology
D. A repository providing information about details of small scale industries adopting energy efficiency measures