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: Medicine
The prognosis of rapidly prolifeating glomerulonephritis (Crescentric GN) depends upon 
Select and explain. 
A. Number of crescents, B. Size of crescents, C. Shape of crescents, D. Cellularity of crescents
A: Number of crescents
Answer: A: Number of crescents 
Explanation: Answer is A (Number of crescents) The prognosis of crescentric glonzerulonephritis relates to the number of crescents Prognosis can he roughly related to the number of crescents' - Robbins