Regarding the bones of the skull:

• A. the anterior clinoid processes are formed by the lesser wings of the sphenoid
• B. the posterior clinoid processes are formed from the occipital bone
• C. the dorsum sellae is formed from the anterior part of the occipital bone
• D. the petious temporal bone forms the floor of the middle cranial fossa, but not the wall of the posterior cranial fossa
• E. the inferior orbital fissure separates the lesser and greater wings of the sphenoid