Physics for IGCSE & O level - Waves And Sounds (Section 5 - No. 25)

In the context of medical applications, why is ultrasound often preferred over X-rays?

Ultrasound waves are faster

Ultrasound is safer because X-rays can cause cell damage

X-rays produce better image quality

Ultrasound is more effective at detecting bone fractures

Ultrasound is safer because X-rays can cause cell damage inside a growing baby