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
Chadwick's sign is : 
Select and explain. 
A. Intermittent urine contraction, B. Bluish discoloration of vagina, C. Vaginal pulsations, D. Softening of the cervix
B: Bluish discoloration of vagina
Answer: B: Bluish discoloration of vagina 
Explanation: Bluish discoloration of vagina