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
What is the usual weight of rabbit used in ophthalmological experiments? 
Select and explain. 
A. 0.5-1 kg, B. 1.5-2.5 kg, C. 5-7 kg, D. 10-12 kg
B: 1.5-2.5 kg
Answer: B: 1.5-2.5 kg 
Explanation: Ans: B. 1.5-2.5 kg(Ref: Animal Models in Eve Research/ p188).The usual weight of rabbit used in ophthalmological experiments is between 1.5-2.5 Kg. Laboratory Animals:Laboratory AnimalsAnimalWeightRat180-200 gmGuinea Pig400-600 gmMouse20-25 gmRabbit1.5-2.5 KgdegHamster80-90 gm