Why Is the Pterygoid Process of the Sphenoid Bone an Important

Why is the pterygoid process of the sphenoid bone an important feature of the skull to the dental professionals?

A) Serves as an attachment for the muscles of mastication
B) Serves as an attachment for muscles involved in swallowing
C) Serves as a landmark observed on maxillary posterior periapical radiographs
D) Serves as a landmark observed on mandibular posterior periapical radiographs