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
All are examples of genetic defects in insulin action, except: 
Select and explain. 
A. Leprechaunism, B. Rabson-Mendenhall syndrome, C. Lipodystrophy syndromes, D. MODY type 3
D: MODY type 3
Answer: D: MODY type 3 
Explanation: Examples of Genetic defects in insulin action are: 1. Type A insulin resistance 2. Leprechaunism 3. Rabson-Mendenhall syndrome 4. Lipodystrophy syndromes Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 2969.