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
All are the features of an acute attack of primary narrow-angle glaucoma except: 
Select and explain. 
A. Intraocular pressure is raised up to 940-70 mm of Hg, B. Eye is red, painful and tender, C. Disc shows glaucomatous cupping, D. Fellow eye also shows shallow anterior chamber
C: Disc shows glaucomatous cupping
Answer: C: Disc shows glaucomatous cupping 
Explanation: Ans. Disc shows glaucomatous cupping