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
Which of the following is false about inferior oblique muscle - 
Select and explain. 
A. It is the shoest muscle, B. Supplied by 3th cranial nerve, C. Originates from annulus of zinn, D. Its primary action is extorsion
C: Originates from annulus of zinn
Answer: C: Originates from annulus of zinn 
Explanation: Answer- C. Originates from annulus of zinnIt originates from orbital plate of maxilla lateral to the orifice of nasolacrimal duct.It is the only muscle to take origin from front of the orbit. Other recti muscle take origin from annulus of zinn.