This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis, Subject name: Medicine
Which of the following infections is not documented to be spread sexual contact? 
Select and explain. 
A. HAV, B. HBV, C. HCV, D. HEV
D: HEV
Answer: D: HEV 
Explanation: HEV- is not documented to be spread sexual contact