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
Osteoporosis is seen in all the following except - 
Select and explain. 
A. Thyrotoxicosis, B. Rheumatoid arthritis, C. Hypoparathyroidism, D. Steroid therapy
C: Hypoparathyroidism
Answer: C: Hypoparathyroidism 
Explanation: None