This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anitibody, Subject name: Microbiology
[{'content': 'Immunoglobulin present in local secretions is? \nSelect and explain. \nA. IgG, B. IgA, C. IgM, D. IgD', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) IgAREF: Robb in s 8th ed chapter 6See APPENDIX-20 for "IMMUNOGLOBULINS"Repeat (***)IgA is present in body in two forms; serum IgA and secretory IgA.', 'role': 'assistant'}]