12.下列何孔洞位於眶上裂(superior orbital fissure)後側尾端,靠近蝶竇(sphenoidal sinus)的外壁?(A)後篩孔(posterior ethmoidal foramen)(B)圓孔(foramen rotundum)(C)乳突孔(mastoid foramen)(D)視神經管(optic canal)