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: Ophthalmology
Irido- Corneal Endothelial syndrome is characterized by 
Select and explain. 
A. Opacity of the cornea with edema of the stroma, B. Deposition of abnormal collagen in descemet's membrane, C. Deposition of glycosaminoglycans in the descemet's membrane, D. Diffuse bilateral senile iris degeneration
B: Deposition of abnormal collagen in descemet's membrane
Answer: B: Deposition of abnormal collagen in descemet's membrane 
Explanation: B i.e. Deposition of abnormal collagen in the Descemet's membrane In iridocorneal endothelial syndrome descemet's membrane may show increased thickness because of presence of abnormal posterior collagenous layerQ.