The Sudden and Unexpected Onset of Dizziness, Imbalance, and Spatial

The sudden and unexpected onset of dizziness, imbalance, and spatial disorientation causing a patient to fall down or experience motion sickness so severe that they repeatedly vomit is called

A) vection.
B) illusory tilt.
C) Ménière's syndrome.
D) mal de debarquement syndrome.
E) vestibular flux.