<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 10-year-old boy is brought in by his parents with increasing breathlessness. He was diagnosed with asthma about 2 years ago and has been on treatment since then. He was initially observed to have breathlessness, cough and chest tightness 2 or 3 times a week. He would wake up once or twice a month in the nighttime with breathlessness. At that time, his pediatrician started him on a Ventolin inhaler to be used during these episodes. His symptoms were well controlled until a few months ago when he started to experience increased nighttime awakenings due to breathlessness. He is unable to play outside with his friends as much because he gets winded easily and has to use his inhaler almost daily to help him breathe easier. He is able to walk and perform other routine activities without difficulty, but playing or participating in sports causes significant struggles. Based on his symptoms, his pediatrician adds an inhaled formoterol and budesonide combination to his current regime. During spirometry, which of the following peak expiratory flow rates will most likely be observed in this patient?? A: 40, B: 55, C: 65, D: 85, E: 90,  <response>: This is a clinical case scenario about a 10-year-old boy with worsening asthma symptoms. He was initially diagnosed and treated for asthma 2 years ago, but his symptoms have progressed over the past few months. He now requires daily use of his rescue inhaler and was started on a combination long-acting beta agonist formoterol and inhaled corticosteroid budesonide. Spirometry is used to assess lung function in asthma patients. Peak expiratory flow rate PEFR measures how quickly air can be exhaled and is reduced in obstructive lung diseases like asthma. Based on the description of moderately severe persistent asthma symptoms, I would expect this patient to have a reduced PEFR compared to normal values.C: 65 