This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
Children with apathy, general weakness, loosening of the skin, marasmic features also has X3B Xerophthalmia features. Eye finding will be 
Select and explain. 
A. Corneal ulcer with thickening, B. Corneal ulcer with full thickness, C. Hyperemia, D. Conjunctival xerosis
B: Corneal ulcer with full thickness
Answer: B: Corneal ulcer with full thickness 
Explanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 467 - 470)X3A Corneal ulceration/keratomalacia affecting less than a one-third corneal surfaceX3B corneal ulceration/keratomalacia affecting more than a one-third corneal surfaceXS corneal scar due to xerophthalmia XF Xerophthalmic fundus