<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 27-year-old man presents to the clinic for his annual physical examination. He was diagnosed with a rare arrhythmia a couple of years ago following an episode of dizziness. A mutation in the gene encoding for the L-type calcium channel protein was identified by genetic testing. He feels fine today. His vitals include: blood pressure 12289 mm Hg, pulse 90min, respiratory rate 14min, and temperature 36.7C 98.0F. The cardiac examination is unremarkable. The patient has been conducting some internet research on how the heart works and specifically asks you about his own ventricular action potential. Which of the following would you expect to see in this patient?? A: Abnormal phase 1, B: Abnormal phase 4, C: Abnormal phase 3, D: Abnormal phase 2, E: Abnormal phase 0,  <response>: This is a question about the expected ventricular action potential in a patient with a mutation in the L-type calcium channel gene. The L-type calcium channel is important for phase 2 of the action potential, where calcium influx leads to the plateau phase. Therefore, a mutation affecting this channel would be expected to cause an abnormality in phase 2 specifically.D: Abnormal phase 2 