This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
Volume of orbit is- 
Select and explain. 
A. 19ml, B. 29ml, C. 39ml, D. 49ml
B: 29ml
Answer: B: 29ml 
Explanation: *Volume of orbit is 29ml. Ref:AK Khurana Anatomy and Physiology of eye 7th/e p.418