A major problem in nutritional support is identifying patients at risk. Recent studies suggest that these patients can be identified. Which of the following findings identify the patient at risk? A. Weight loss of greater than 10% over 2 to 4 months. B. Serum albumin of less than 3 gm. per 100 ml. in the hydrated state. C. Malnutrition as identified by global assessment. D. Serum transferrin of less than 220 mg. per 100 ml. E. Functional impairment by history.