<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 7-year-old boy presents to the urgent care from a friends birthday party with trouble breathing. He is immediately placed on supplemental oxygen therapy. His father explains that peanut butter treats were served at the event but he didnt see his son actually eat one. During the party, his son approached him with facial flushing and some difficulty breathing while itching his face and neck. He was born at 40 weeks via spontaneous vaginal delivery. He has met all developmental milestones and is fully vaccinated. Past medical history is significant for peanut allergy and asthma. He carries an emergency inhaler. Family history is noncontributory. His blood pressure is 11085 mm Hg, the heart rate is 110min, the respiratory rate is 25min, and the temperature is 37.2C 99.0F. On physical examination, he has severe edema over his face and severe audible stridor in both lungs. Of the following, which type of hypersensitivity reaction is this patient experiencing? ? A: Type 1 - anaphylactic hypersensitivity reaction, B: Type 2 - cytotoxic hypersensitivity reaction, C: Type 3 - immune complex mediated hypersensitivity reaction , D: Type 4 - cell mediated delayed hypersensitivity reaction, E: Both A B,  <response>: This is a 7-year-old boy with a known history of peanut allergy and asthma who is presenting with acute symptoms of facial flushing, difficulty breathing, itching of the face and neck, stridor, and edema after possible exposure to peanut butter at a party. His vital signs are consistent with an acute allergic reaction. The key details in the stem point towards a type 1 hypersensitivity reaction given his known peanut allergy, the acute timing of symptom onset after exposure, and the clinical manifestations described.A: Type 1 - anaphylactic hypersensitivity reaction 