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
Hallmark of Arias - stella reaction is 
Select and explain. 
A. Pinopods, B. Nuclear enlargement, C. Vacuoles in cytoplasm, D. Nuclear pyknosis
B: Nuclear enlargement
Answer: B: Nuclear enlargement 
Explanation: Classical hallmark of nuclear enlargement in glandular cells is seen in Arias stella reaction.