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: Surgery
True about pseudo - pseudo hypoparathyroidism 
Select and explain. 
A. High PTH level, B. Normal serum calcium level, C. Both, D. None
C: Both
Answer: C: Both 
Explanation: Both Pseudo and pseudo - pseudo hypoparathyroid are congenital disorder where tissues are resistant to action of PTH. Impoant clinical features are sho fouh and fifth metacarpal and metatarsal. Mental retardation is a feature in pseudo hypoparathyroid serum PTH levels are high and serum calcium levels are low. But pseudo-pseudo hypoparathyroid serum PTH is high but serum calcium level are normal.