<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 41-year-old woman comes to the emergency room because she has been taking phenelzine for a few years and her doctor warned her that she should not eat aged cheese while on the medication. That night, she unknowingly ate an appetizer at a friends party that was filled with cheese. She is concerned and wants to make sure that everything is all right. What vital sign or blood test is the most important to monitor in this patient?? A: Heart rate, B: Oxygen saturation, C: Creatine phosphokinase, D: Blood pressure, E: Temperature,  <response>: This is a question about drug interactions and side effects. The patient is taking phenelzine, which is a monoamine oxidase inhibitor MAOI antidepressant. MAOIs can interact with tyramine in aged cheeses to cause hypertensive crisis. The most important vital sign or blood test to monitor for this interaction would be blood pressure, as an acute rise in blood pressure hypertensive crisis is the main concern.D: Blood pressure 