Question: Which of the following HPI questions most accurately reflects the definition of vertigo? A. "Do you feel like you are unsteady or unbalanced only when you are standing?" B. "Does the room spin, as if you are on a roundabout or merry-go-round?" C. "Do you feel like your heart is racing when you get dizzy?" D. "Do you feel light-headed, as if you are about to faint?"