The relationship between corpulence and disease remains controversial, although statistics clearly （） reduced life expectancy（）chronic obesity.

A．Three out of every four automobile owners；also own a bicycle
B．Out of every four, three automobile owners；also owns a bicycle
C．Three out of every four automobile owners；owns bicycles
D．Out of every four owners of automobiles；bicycles are also owned by three

A．significant increases in housing integration, which, in turn, reduces
B．significant integration increases in housing, which, in turn, reduces
C．increases housing integration significantly, which, in turn, reduces
D．increases housing integration significantly, which, in turn, reduce