A 55 year old male presented with painless terminal hematuria. Cystoscopic examination revealed a solitary papillary tumor. A histopathological examination of completely resected tumor is suggestive of grade Ⅲ (high grade) transitional cell carcinoma with no muscle invasion. Further management of this patient is best done by
A
just follow up
B
intravesical chemotherapy
C
intravesical BCG
D
partial cystectomy
E
cystectomy