Which of the following statements is incorrect?
选项：

A:In clinic, IgA nephropathy is common in children and teenagers.;
B:Patients with IgA nephropathy usually have recurrent hematuria following a mucosal infection.;
C:The prognosis of chronic GN is good, as there is no acute damage to the kidney.;
D:Various glomerular diseases may go to a stage of chronic GN.