Claim A: Geothermal energy is too complicated to ever be used on a large scale

Claim B: Geothermal energy is a promising new method for heating
American homes.

Which claim does the following piece of evidence best support?

Green technology expert Andrew Blandsmeier explains that
geothermal energy takes advantage of the constant, natural heat
beneath the Earth's surface by running water through pipes deep
underground and then pumping it back to the surface to heat houses
or office buildings.

A. Claim A, because it shows why geothermal energy will never
become popular

B. Claim A, because it illustrates the difficulty of creating new energy
technologies

C. Claim B, because it explains why buildings heated with geothermal
energy are the most comfortable

D. Claim B, because it provides details about how geothermal energy
works