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
Most common route of transmission of hepatitis C: 
Select and explain. 
A. IV drug abuse, B. Sexual contact, C. Factor 8 concentrate, D. Feco-oral route
A: IV drug abuse
Answer: A: IV drug abuse 
Explanation: Screening of donated blood for HCV antibody has decreased the risk of transfusion-associated HCV infection Persons who inject illegal drugs with non-sterile needles or who sno cocaine with shared straws are at highest risk for HCV infection. In developed countries, most new HCV infections are related to intravenous drug abuse (IVDA).