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: Gynaecology & Obstetrics
Regarding saline infusion sonography, all are true except 
Select and explain. 
A. Best performed within first 10 days of menstrual cycle., B. Timing of procedure is cycle dependent in all women, C. SIS in initial days of cycle, precludes disturbing a potential pregnancy, D. SIS is optimally done on cycle days, 4,5 or 6 because the lining is thinnest
B: Timing of procedure is cycle dependent in all women
Answer: B: Timing of procedure is cycle dependent in all women 
Explanation: For post-menopausal woman, timing of procedure is not cycle - dependent.