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: Medicine
Plasma ferritin levels may be reduced in all of the following conditions, except - 
Select and explain. 
A. Iron deficiency, B. Vitamin C deficeincy, C. Liver disease, D. Hypothyroidism
C: Liver disease
Answer: C: Liver disease 
Explanation: None