In the third paragraph, by saying "The pleasure of a Smart drive is partly in stumbling across artifacts from man's attempts to make use of the bush.", the author is suggesting that _______.

A．man-made buildings are seen everywhere along the Stuart Highway.
B．human being has lived in the bush for a long time.
C．sometime drivers are surprised to find wooden houses or ruins that once housed many people in the barren land along the Smart Highway.
D．It is a pleasure to have a drink in one of the pubs along the Highway.