The author mentions Wagner's choice of a "circular ground plan for churches" most likely in order to A. provide an example of the kinds of technological innovations Wagner introduced into modern architecture B. provide an example of Wagner's dismissal of historical forms from Italian Renaissance C. provide an example of a modern building where technological issues were much less significant than aesthetic demands D. provide evidence of Wagner's tendency to imitate Italian Renaissance and Austrian Baroque models E. provide evidence of the tension between Wagner's commitment to modern technology and to the Classical tradition