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
Amsel criteria does not include: 
Select and explain. 
A. Thick, curdy white discharge, B. Clue cells, C. Whiff test positive, D. Vaginal pH >4.5
A: Thick, curdy white discharge
Answer: A: Thick, curdy white discharge 
Explanation: Amsel criteria include thin, white homogenous discharge not thick discharge.
Option b,c,d are included in Amsel criteria.
3 out of 4 should be present to diagnose it as Bacterial vaginosis.