This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
TPN may be complicated by - 
Select and explain. 
A. Obstructive jaundice, B. Hyperosteosis, C. Hypercalcemia, D. Pancreatitis
C: Hypercalcemia
Answer: C: Hypercalcemia 
Explanation: • Characterized by severe fluid and electrolyte shifts in malnourished patients undergoing refeeding.
• It can occur with either enteral or parenteral nutrition but is more common with the latter.
• It results in hypophosphataemia, hypocalcaemia and hypomagnesaemia.
• Risk Factors: Alcohol dependency, severe malnutrition, Anorexics and prolonged periods of fasting.
Treatment
• Treatment involves matching intakes with requirements and assiduously avoiding overfeeding.
• Calorie delivery should be increased slowly and vitamins administered regularly.
• Hypophosphataemia and hypomagnesaemia require treatment.