Official Answer Key & Detailed Solution
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Correct Answer: Option (B) — Hepatitis B, unlike Hepatitis C, does not have a vaccine.
Concept & Option Breakdown
Standard Reference VerifiedStatement (b) is incorrect (and hence the correct option): An effective vaccine is available for Hepatitis B, whereas there is currently no vaccine available for Hepatitis C. Statements (a), (c), and (d) are all factually correct statements regarding HBV and HCV epidemiology and transmission.
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