<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 4-year-old boy is brought to the physician because of a 3-day history of fever and left ear pain. Examination of the left ear shows a bulging tympanic membrane with green discharge. Gram stain of the discharge shows a gram-negative coccobacillus. The isolated organism grows on chocolate agar. The causal pathogen most likely produces a virulence factor that acts by which of the following mechanisms?? A: Binding of the Fc region of immunoglobulins, B: Inactivation of 60S ribosome, C: Overactivation of adenylate cyclase, D: Cleavage of secretory immunoglobulins, E: Inactivation of elongation factor,  <response>: This is a question about identifying the likely virulence factor mechanism of a pathogen based on clinical presentation and microbiology findings. The key findings are:- 4 year old boy with fever and left ear pain - Left ear exam shows bulging tympanic membrane with green discharge- Gram stain shows gram-negative coccobacillus- Organism grows on chocolate agar- Most likely diagnosis is acute otitis media caused by Haemophilus influenzaeBased on these findings, H. influenzae is the likely pathogen. A key virulence factor of H. influenzae is the IgA protease which cleaves secretory IgA antibodies. This allows the bacteria to evade the immune defenses in the respiratory mucosa.D: Cleavage of secretory immunoglobulins 