All of the Following Statements Accurately Describe the Office-Home Building

Multiple Choice

All of the following statements accurately describe the office-home building of the Rocky Mountain Institute except:

A) Solar energy provides 90% of the household electricity.
B) The Institute's heating bill is just less than $50 per year.
C) A central greenhouse in the building humidifies the building and helps to heat it and purify the air.
D) Except for office equipment power, the building draws a little more electricity than a single 100-watt light bulb would draw.
E) Solar energy provides about 99% of the hot water used in the building.