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: Dental
Patients on oral bisphosphonate therapy can be successfully treated with implant surgery, when minimum values of [-terminal cross-linked telopeptide type I collagen (CTX) are 
Select and explain. 
A. 150 pg/ml, B. 100 pg/ml, C. 80 pg/ml, D. 50 pg/ml
A: 150 pg/ml
Answer: A: 150 pg/ml 
Explanation: None