问题详情

Themainideaofthelastparagraphisthat______.
A．mostnewideasare,infact,asoldashills.
B．itisthereductiontocommercialpracticethatmakesnewsandmoney
C．manyoftheoriginalideasbehindTVoriginatedearlier
D．Volkswagenrearenginecaroriginatedfromacartwiththehorseattherear
请帮忙给出正确答案和分析，谢谢！