Over the last decade, the overall energy consumption of cloud data centers worldwide has remained relatively the same. Why is this so?

A)The technology supporting cloud data centers has become much more energy efficient.

B)Cloud data centers operate with less computing power than they did in the past.

C)Cloud providers have placed limits on the amount of data stored at each center.

D)There is significantly less customer demand for cloud computing than a decade ago.

E)I don't know this yet.