<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 22-year-old woman presents to the physician due to lightheadedness. Earlier in the day, she had her first job interview since graduating from college 3 months ago. While waiting outside the interviewers office, she began to feel nervous and started breathing really fast. She then felt as if she was going to faint. She excused herself from the interview, and requested a friend to drive her to the clinic. Which of the following is responsible for her symptoms?? A: Decreased arterial pCO2, B: Increased arterial pO2, C: Decreased arterial pH, D: Increased plasma lactic acid, E: Vagus nerve stimulation,  <response>: This question is asking about the physiological cause of lightheadedness and near fainting in a 22-year-old woman who was experiencing anxiety while waiting for a job interview. Based on the description, it seems she was hyperventilating due to the anxiety, which led to symptoms of lightheadedness and near syncope. The key is to identify what physiological change occurs with hyperventilation that would cause these symptoms.A: Decreased arterial pCO2 