<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Immunology researchers attempt to characterize the role of several cytokines in a 5-year-old males allergic reaction to peanuts. Months after initial exposure to peanuts, the child was brought to the ER due to repeat exposure with symptoms of anaphylaxis that resolved following epinephrine injection and supportive therapy. Which of the following best describes the role of IL-4 in the childs response:? A: B cell class switching, B: Stimulates IgA production, C: Macrophage and Th1 cell activation, D: Neutrophil chemotaxis, E: Growth of cytotoxic T cells,  <response>: This is a question about immunology and the role of cytokines in an allergic reaction. The key details are that a 5-year-old male had an anaphylactic reaction to peanuts months after initial exposure. IL-4 is mentioned as one of the cytokines that researchers are investigating. The question asks which choice best describes the role of IL-4 in this allergic response.A: B cell class switching 