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: Pathology
Gomoris' aldehyde fuchsin specifically stains ? 
Select and explain. 
A. Alcian blue, B. PAS, C. Methylene blue, D. Geimsa stain
A: Alcian blue
Answer: A: Alcian blue 
Explanation: Ans. is 'a' ie.e, InsulinGomori's aldehyde Fuschin stain used to demonstrate3 cells of pancreas o Storage form of thyrotropic hormone in beta cells of anterior pituitaryo Mast cells o Hypophyseal neurosecretory substanceo Elastic fibres o GranulesSulfated mucin