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
Manual appreciation of fetal pas and fetal movement by examination is earliest possible at____________weeks of gestation: 
Select and explain. 
A. 20, B. 24, C. 26, D. 28
A: 20
Answer: A: 20 
Explanation: 20