单选题 How does a building contractor most readily prove compliance with the building codes governing new construction? By using those established technologies that the authors of the codes had in mind when setting specifications. This, unfortunately, means that there will never be any significant technological innovation within the industry.
Which of the following, if true, casts the most serious doubt on the conclusion above?

A、 Among the authors of codes governing new construction are people who were formerly building contractors.
B、 The authors of codes governing new construction are under pressure to set rigorous specifications.
C、 What are now regarded as established technologies were once so innovative that the authors of the codes then applicable could not have foreseen them.
D、 Noncompliance with the codes governing new construction can prove extremely costly to the building contractor in charge of the project.
E、 (E) The established technologies of one country's building industry can be very different from those of another's.

【正确答案】 C

【答案解析】