A 29-year-old woman presents with sudden pleuritic chest pain and shortness of breath after a long-haul flight. She has no leg swelling. Her Wells score is low and D-dimer is negative. What is the most appropriate next step?AOrder CT pulmonary angiography to definitively exclude PEBReassure and discharge with no anticoagulationCAdmit for V/Q scan the next dayDStart therapeutic anticoagulation despite negative D-dimerEArrange lower-limb Doppler ultrasound to search for occult DVTCheck my answer