Surgery 70 year old man with prostate cancer was given radiotherapy. The recurrence of the cancer is monitored biochemically by A Androgens only B Prostate specific antigen and carcino-embryonic antigen C Prostate specific antigen only D ALP and CEA 💡 Explanation 70 year old man with prostate cancer was given radiotherapy. The recurrence of the cancer is monitored biochemically by ✓ Correct Answer: C. Prostate specific antigen only