Given below are two statements:

Statement (I) : X-rays are electromagnetic waves with wavelength range (0.1 Å - 100 Å)

Statement (II) : X-rays are used in studying crystal structure and complex molecules.

In the light of the above statements, choose the most appropriate answer from the options given below:

Both Statement I and Statement II are true

Statement I provides the characteristic of X-rays, which is their wavelength range.

Statement II provides the application of X-rays. To conclude that X-rays are used in studying crystal structure and complex molecules, we need to know what X-rays are (from Statement I) and their properties, which enable them to be used for this purpose.

Thus, I and II are logically related and both are necessary to answer the question.