This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Pathology
Fixative agent for PAP smear is which of the following? 
Select and explain. 
A. Normal saline, B. 95% ethanol, C. Formalin, D. Air drying
B: 95% ethanol
Answer: B: 95% ethanol 
Explanation: PAP smear is an impoant screening test which is used to diagnose cervical dysplasia or cervical carcinoma in females. We use Ether and 95% ethyl alcohol solution in the ratio 1:1 as fixative for the purpose of PAP smear. Best screening test to pick up cervical cancer in the early stage - (Visual Inspection of Cervix with Acetic acid)