<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 45-year-old woman, suspected of having colon cancer, is advised to undergo a contrast-CT scan of the abdomen. She has no comorbidities and no significant past medical history. There is also no history of drug allergy. However, she reports that she is allergic to certain kinds of seafood. After tests confirm normal renal function, she is taken to the CT scan room where radiocontrast dye is injected intravenously and a CT scan of her abdomen is conducted. While being transferred to her ward, she develops generalized itching and urticarial rashes, with facial angioedema. She becomes dyspneic. Her pulse is 110min, the blood pressure is 8050 mm Hg, and the respirations are 30min. Her upper and lower extremities are pink and warm. What is the most appropriate management of this patient?? A: Perform IV resuscitation with colloids, B: Administer broad-spectrum IV antibiotics, C: Administer vasopressors norepinephrine and dopamine, D: Obtain an arterial blood gas analysis, E: Inject epinephrine 1:1000, followed by steroids and antihistamines,  <response>: This is a clinical vignette describing a patient who develops anaphylaxis after receiving intravenous radiocontrast dye for a CT scan. The key findings are generalized itching, urticarial rash, angioedema, dyspnea, tachycardia, hypotension, and tachypnea. This constellation of symptoms and vital sign changes are classic for anaphylaxis, likely triggered by the radiocontrast dye. The question asks for the most appropriate management. Choice A is incorrect, as IV fluid resuscitation alone is inadequate. Choice B is incorrect, as there is no evidence of infection requiring antibiotics. Choice C is incorrect, as vasopressors alone are inadequate. Choice D may be appropriate as part of the workup, but is not the most urgent priority. Choice E is correct, as epinephrine is the first-line treatment for anaphylaxis, followed by steroids and antihistamines.E: Inject epinephrine 1:1000, followed by steroids and antihistamines 