<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 49-year-old man seeks evaluation at an urgent care clinic with a complaint of palpitations for the past few hours. He denies any chest pain, shortness of breath, or sweating. He is anxious and appears worried. His medical history is unremarkable with the exception of mild bronchial asthma. He only uses medications during an asthma attack and has not used medications since last week. He is a former smoker and drinks a couple of beers on weekends. His heart rate is 146min, respiratory rate is 16min, temperature is 37.6C 99.68F, and blood pressure is 12080 mm Hg. The physical examination is unremarkable, and an electrocardiogram is ordered. Which of the following groups of drugs should be given to treat his symptoms?? A: α1-receptor antagonist, B: Selective β1-receptor antagonist, C: Non-selective β-receptor antagonist, D: α-receptor agonist, E: β-receptor agonist,  <response>: This is a clinical case of a 49-year-old man presenting with palpitations and a heart rate of 146 beats per minute. The key findings are the rapid heart rate without other concerning symptoms like chest pain, shortness of breath, or sweating. This suggests a benign cause of his palpitations like supraventricular tachycardia. The history is also notable for mild asthma, which can sometimes exacerbate palpitations. The question asks which group of drugs should be used to treat his symptoms. Based on the clinical presentation, the goal would be to slow down the heart rate using a beta blocker. Beta blockers work by blocking beta receptors in the heart to reduce sympathetic stimulation and lower heart rate. A selective beta-1 receptor antagonist would provide rate control while minimizing side effects like bronchospasm from blocking beta-2 receptors in the lungs.B: Selective β1-receptor antagonist 