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
Secondary Hyperparathyroidism is seen in all of the following, Except 
Select and explain. 
A. Rickets, B. Osteomalacia, C. Osteoporosis, D. Renal failure
C: Osteoporosis
Answer: C: Osteoporosis 
Explanation: Answer is C (Osteoporosis): Osteoporosis is neither associated with hypocalcaemia nor with secondary Hyperparathyroidism