Which describes the arteries that ascend up the brainstem? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Two common carotid arteries which branch off as the external carotid artery b Two common carotid arteries which branch off as the internal carotid artery Two basilar arteries which converge as the vertebral artery d Two basilar arteries which converge as the superior cerebellar artery e Two vertebral arteries which converge as the basilar artery

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