This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Ophthalmology
Increased LDH in Aqueous Humor suggest a diagnosis of- 
Select and explain. 
A. Galactosemia, B. Retinoblastoma, C. Glaucoma, D. Gyrate atrophy
B: Retinoblastoma
Answer: B: Retinoblastoma 
Explanation: *LDH of aqueous humor is often used as a marker for retinoblastoma. Ref: Khurana 7th/e p.314.