A:good; good
B:good; well
C:well; good
D:well; well
已知fx=lnx1+x-lnx,f(x)在x=x0处取得最大值,以下各式中正确的序号为( )①fx0<x0 ②fx0=x0 ③fx0>x0 ④fx0<12 ⑤fx0>12