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 of the following statements about Pseudohypoparathyroidism are true, except - 
Select and explain. 
A. ↓Serum PTH, B. ↓ Serum calcium, C. ↑ Serum phosphate, D. Albright's hereditary osteodystrophy
A: ↓Serum PTH
Answer: A: ↓Serum PTH 
Explanation: None