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
Veical transmission of hepatitis C is: 
Select and explain. 
A. 5%, B. 10%, C. 25%, D. 50%
A: 5%
Answer: A: 5% 
Explanation: The chances of sexual and perinatal transmission have been estimated to be <5%, well below comparable rates for HIV and HBV infections. HCV potentially can be transmitted sexually and perinatally; however, both of these modes of transmission are inefficient for hepatitis C.