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
A patient is on total Parenteral nutrition. Which of the following nutrient deficiency he might develop? 
Select and explain. 
A. Vitamin B12, B. Folic acid, C. Vitamin B6, D. Zinc
D: Zinc
Answer: D: Zinc 
Explanation: None