contestada

Which of the following best describes how an atomic property is used in the treatment of cancer?
A
An unstable atom that absorbs gamma rays is used in radiation therapy to treat cancer.
В.
A stable atom that absorbs gamma rays is used in radiation therapy to treat cancer.
C.
A stable atom that emits gamma rays is used in radiation therapy to treat cancer.
An unstable atom that emits gamma rays is used in radiation therapy to treat cancer.