Simon presents to the clinic with complaints of "room spinning" and transient nausea. The evaluating therapist suspects cupulolithiasis. Which of the following is NOT a characteristic of BPPV from cupulolithiasis?
A. Immediate onset of vertigo in provoking positions
B. Presence of nystagmus
C. Persistence of vertigo and nystagmus as long as the patient is in the provoking position
D. Delayed onset of vertigo in provoking positions
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