<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 60-year-old man comes to the physicians office with jaundice. Liver ultrasound reveals a shrunken liver and biopsy reveals cirrhosis. Hepatitis serologies are below:Anti-HAV: negativeHBsAg: negativeHBsAb: positiveHBeAg: negativeAnti-HBe: negativeAnti-HBc: negativeAnti-HCV: positiveThe hepatitis C viral load is 1,000,000 copiesmL. The patient is started on an antiviral regimen including sofosbuvir. What is the mechanism of action of this drug?? A: Inhibits synthesis of DNA-dependent DNA polymerase, B: Inhibits hepatitis C protease, C: Inhibits reverse transcriptase, D: Inhibits integrase, E: Inhibits RNA-dependent RNA polymerase,  <response>: Based on the information provided in the question stem, this patient has chronic hepatitis C infection, as evidenced by the positive anti-HCV antibody and high HCV viral load. The question asks about the mechanism of action of sofosbuvir, which was started as part of this patients antiviral regimen. The serologies indicate prior exposure to hepatitis A and B, but no active infection. The cirrhosis is likely due to long-standing HCV infection. The choices describe mechanisms of action of various antiviral drugs. To answer this question, I need to know the specific mechanism of action of sofosbuvir.E: Inhibits RNA-dependent RNA polymerase 