Question: Which of the following would be appropriate to order for a patient with unilateral leg swelling associated discomfort after a 48-hour immobilization period? Want Professional Help? O a. Venous duplex ultrasound of bilateral lower extremities STAT O b. Arterial duplex ultrasound of bilateral lower extremities STAT O c. CT scan of bilateral lower extremities with oral and intravenous contrast O d. Venous duplex ultrasound of bilateral lower extremities ordered as routine