All of the following canals open on the posterior wall of the pterygo palatine fossa EXCEPT_____________?

All of the following canals open on the posterior wall of the pterygo

1.	All of the following canals open on the posterior wall of the pterygo palatine fossa EXCEPT_____________?
A.	Greater palatine canal
B.	Foramen Rotundum
C.	Pterygoid canal
D.	Palatovaginal canal
Answer» B. Foramen Rotundum