<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 32-year-old woman comes to the physician for a screening health examination that is required for scuba diving certification. The physician asks her to perform a breathing technique: following deep inspiration, she is instructed to forcefully exhale against a closed airway and contract her abdominal muscles while different cardiovascular parameters are evaluated. Which of the following effects is most likely after 10 seconds in this position?? A: Increased venous return to left atrium, B: Decreased systemic vascular resistance, C: Decreased left ventricular stroke volume, D: Decreased intra-abdominal pressure, E: Decreased pulse rate,  <response>: This is a question about the Valsalva maneuver, where forced exhalation is performed against a closed airway. This increases intrathoracic pressure, which decreases venous return and subsequently decreases left ventricular filling and stroke volume. The increased intrathoracic pressure is also transmitted to the arteries, increasing arterial pressure. Baroreceptor firing increases in response, which reflexively decreases heart rate.C: Decreased left ventricular stroke volume 