<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:When hepatitis D was injected into an immunocompromised mouse, there was no detectable hepatitis D RNA in the blood at any time point during the next several months. When co-injected with hepatitis B, hepatitis D RNA was was detected in the blood. Which of the following best describes this phenomenon?? A: Recombination, B: Reassortment, C: Complementation, D: Phenotypic mixing, E: Transduction,  <response>: This question is asking about the interaction between hepatitis D virus HDV and hepatitis B virus HBV in an animal model. HDV is a defective virus that requires helper functions from HBV for its replication and transmission. When HDV was injected alone into an immunocompromised mouse, there was no detectable HDV RNA in the blood, indicating that HDV cannot replicate on its own. However, when HDV was co-injected with HBV, HDV RNA was detected, showing that HBV provided helper functions that allowed HDV to replicate. This phenomenon demonstrates complementation, where HBV complements the defective functions of HDV. Recombination and reassortment involve genetic exchange between viruses and do not apply here. Phenotypic mixing refers to the acquisition of phenotypic traits between different viral strains during coinfection, which is not described. Transduction involves transfer of genetic material by a virus, which does not explain the helper effect of HBV on HDV replication.C: Complementation 