单项选择题

A.CA及CDCA浓度增加且CA/CDCA>1
B.CA及CDCA浓度增加且CA/CDCA<1
C.CA及CDCA浓度减少且CA/CDCA>1
D.CA及CDCA浓度减少且CA/CDCA<1
E.CA及CDCA成比例增加