<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 21-year-old man presents for a pre-employment medical check-up. He has a history of persistent asthma and regularly uses inhaled fluticasone for prophylaxis. For the last week, he has been experiencing increasing symptoms, such as night time cough and wheezing on exertion. Because his albuterol metered-dose inhaler ran out, he has been taking oral albuterol 3 times a day for the last 3 days, which has improved his symptoms. The physician performs a complete physical examination and orders laboratory tests. Which of the following findings is most likely to be present on his physical examination or laboratory studies?? A: Pulse rate is 116min, B: Upbeat nystagmus, C: Myoclonus, D: Serum potassium is 5.5 mEqL 5.5 mmolL, E: Serum magnesium is 2.4 mEqL 1.2 mmolL,  <response>: This is a clinical vignette about a 21-year-old man with a history of asthma who is experiencing an asthma exacerbation. He has been using oral albuterol to treat his symptoms, which can cause side effects like tachycardia, hypokalemia, and hypomagnesemia. The question is asking which physical exam or lab finding is most likely to be present given his history and medication use. The choices include tachycardia, nystagmus, myoclonus, hypokalemia, and hypomagnesemia. Tachycardia is a known side effect of oral albuterol, so this is likely to be present. The other findings are less likely based on the clinical scenario.A: Pulse rate is 116min 