Q676056 - FUMARC - 2018 - Cemig-MG - Técnico Mantenedor Eletroeletrônico da Geração I,

What is interesting about homes built in the U.S. after 2000?

a)
They use 30% less energy than they used to.
b)
They are larger but use less energy than old houses.
c)
They are less economical than the old houses.
d)
They do not depend on efficient regular heaters.