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: Biochemistry
The patient suffered from hypogonadism, failure to thrive, loss of taste and unable to maintain stability. This shows the deficiency of: 
Select and explain. 
A. Zinc, B. Chromium, C. Copper, D. Potassium
A: Zinc
Answer: A: Zinc 
Explanation: None