White X-rays are called 'white' due to the fact that:

Options

A. they are electromagnetic radiations having nature same as that of white light,
B. they are produced most abundantly in X ray tubes
C. they have a continuous wavelength range.
D. they can be converted to visible light using coated screens and photographic plates are affected by them just like light.

Answer

C

Explanation

they have a continuous wavelength range.