Which of the following skull fractures is called a 'Motorcyclist's fracture'

B i.e. Hinge fracture of base of skull Guide to forensic medicine & toxicology: Jain (2004) p 98] Hinge fracture of base of skull, in which the base of skull is divided into two halvesQ, each moving independently of each other like a hinge, is termed as motor cyclest's facture.