A 45-year-old man incurs blunt chest trauma in a boating accident. On examination he has marked right chest wall pain. A chest radiograph shows a fractured 7th rib on the right side. Over the next 2 days he has subcutaneous soft tissue swelling with nonpainful crepitance on palpation of the right chest wall. Leakage of which of the following is most likely producing this swelling?
Acid Air Blood Lymph