How does the author of “Solar Power for Public Buildings” conclude that converting all public buildings to solar power will boost California’s economy? A. by claiming that the conversion to solar power will improve the quality of life for citizens. B. by proving that using solar power for energy is cleaner than using natural gas and oil. C. by listing jobs created by solar and explaining how workers with earnings to spend help businesses by listing jobs created by solar and explaining how workers with earnings to spend help businesses. D. by describing different branches of science that promote increasing the use of solar power