You are answering a USMLE-style medical question. Question: An investigator is studying bacterial adaptations to the environment in an infectious isolate and a noninfectious isolate of Hemophilus influenzae type B. Animals exposed to the noninfectious isolate do not develop symptoms of infection. The investigator cultivates the noninfectious isolate in a culture with lysed bacteria from the infectious isolate. Some of the animals exposed to these bacteria develop symptoms of infection. Which of the following processes is most likely responsible for the described findings? Options: A) Conjugation B) Reassortment C) Transformation D) Recombination Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.