This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
A 28 year old male is brought to you for issual of a potency ceificate. On examination the external genitalia is normal. Which of the following is the optimal statement that can be given in this scenario? 
Select and explain. 
A. The person may or maynot be impotent, B. The person may or may not be potent, C. There is nothing to suggest that the person is incapable of sexual intercourse, D. The person is potent
C: There is nothing to suggest that the person is incapable of sexual intercourse
Answer: C: There is nothing to suggest that the person is incapable of sexual intercourse 
Explanation: An opinion of impotency or diminished potency can be given only in the presence of marked detion from the normal. People with normal external genitals can not be said to be impotent. In this scenario it is optimal to give the opinion in negative form as potency or impotency is largely inferential. Ref: Textbook of Forensic Medicine and Toxicology by Narayan Reddy, Edition 21, Page - 323