Which patient is most likely experiencing a pulmonary embolism (PE)?

A A 40-year-old woman who came into the ER with a swollen, painful calf and now complains of chest pains and having trouble breathing, with tachycardia and tachypnea. C A 30-year-old man with a history of smoking and a sedentary lifestyle who had an appendectomy 1 day ago and is refusing to ambulate or wear compression stockings. D A 55-year-old woman who came into the ER with chest pains, shortness of breath, nausea, tachypnea, and radiating jaw pain. B A 60-year-old man who is tired and has been in the med-surg unit for 3 days with AKI after taking IV antibiotics.