National Institute of Health and Clinical Excellence criteria for identifying those at risk for refeeding syndrome includes
a. Individuals with a BMI < 19 and very little or no nutritional intake for more than 5 days
b. Individuals with a BMI < 18.5 and history of chronic drug use
c. Individuals with a BMI < 18 and low serum sodium level
d. Individuals with a BMI < 20 and unintentional weight loss of > 10% of body weight in the past 3 to 6 months