*This 79-year-old woman fell and hit her head three days ago. She now has urinary incontinence, weakness of the entire right side of her body. A skull x-ray showed no fractures.*

*Which statements about the recommended imaging study are correct?*

A. Ionizing

B. Non-ionizing

C. Cerebral angiography

D. Myelography

E. Spinal CT scan

F. Scan without contrast

G. MRA

H. Barium contrast used

I. Air ventriculography