Where Are the Sources of Radiation Exposure in an Operating

Where are the sources of radiation exposure in an operating room setting?

A) Ionizing sources (e.g.,ultrasound machines) and nonionizing sources (e.g.,MRI scanners)
B) Nonattenuated fluorescent lights and portable x-ray machines without lead guards
C) Radioactive seed implants not contained in a lead container and nonionizing lasers
D) Nonionizing sources (e.g.,lasers) and ionizing sources (e.g.,x-ray machines and C-arms)