The electromagnetic waves which can be used to destroy cancer cells are:

A. Ultra Violet Rays

B. Gamma Rays

C. Infrared Rays

D. X-Rays

E. Microwaves

Choose the correct answer from the options given below:

B and D only

Because Gamma rays and X rays can kill living cells, they are used to kill cancer cells without having to resort to difficult surgery. This is called "Radiotherapy", and works because healthy cells can repair themselves fairly well when damaged by gamma rays - but cancer cellscan't.