B

Reasoning: Standard anatomical sources describe the pharyngotympanic (auditory) tube being vascularized chiefly by (1) the pharyngeal branch of the ascending pharyngeal artery, (2) the superior tympanic branch of the middle meningeal artery, and (3) the artery of the pterygoid (vidian) canal [Baltsavias 2012, PMID 22958762; Tanoue 2024, PMID 38783497]. The ascending palatine branch of the facial artery supplies the soft palate and tonsillar region but is not part of this typical arterial network, making it the exception.