<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:In a previous experiment infecting hepatocytes, it was shown that viable HDV virions were only produced in the presence of a co-infection with HBV. To better understand which HBV particle was necessary for the production of viable HDV virions, the scientist encoded in separate plasmids the various antigensproteins of HBV and co-infected the hepatocytes with HDV. In which of the experiments would viable HDV virions be produced in conjunction with the appropriate HBV antigenprotein?? A: HBsAg, B: HBV DNA polymerase, C: HBcAg, D: HBV RNA polymerase, E: HBeAg,  <response>: This is a question about hepatitis D virus HDV biology. It provides background that viable HDV virions are only produced when hepatocytes are co-infected with HBV. To identify the specific HBV component needed, experiments were done infecting hepatocytes with HDV plus plasmids encoding individual HBV proteins. The question asks which HBV protein experiment would yield viable HDV virions.HBsAg is the surface antigen of HBV and forms the viral envelope. HBcAg is the viral capsid protein. The DNA and RNA polymerases are enzymes involved in viral replication. HBeAg is a secreted form of HBcAg. Since HDV requires the HBV envelope for production of viable virions, HBsAg would provide this and allow virion production. The other proteins are not structural components needed to make complete virions.A: HBsAg 