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
Latent period in primigravida is? 
Select and explain. 
A. 2 hours, B. 6 to 8 hours, C. 10 to 12 hours, D. 14 to 16 hours
B: 6 to 8 hours
Answer: B: 6 to 8 hours 
Explanation: 6 to 8 hours