A 35-year-old male presents to the emergency department following a motor vehicle collision with left-sided head trauma. On examination, he has post-auricular ecchymosis (Battle sign) and reports vertigo and hearing loss on the left side. A lateral skull X-ray is obtained. The structure marked **B** (petrous ridge and petrous bone) is examined for fracture patterns. Based on the clinical presentation and the expected fracture orientation through this structure, which type of petrous bone fracture is most likely?