Ozone is used in swimming pools because

In which layer of the atmosphere is ozone found that absorbs ultraviolet radiation from the Sun?

In which layer of the atmosphere is the ozone layer located?

Ozone layer depletion or a hole in the ozone layer is primarily found over which region?

Given below are two statements.
Statement $I$: Absorption of $UV$ radiations is directly proportional to the thickness of ozone.
Statement $II$: Ozone is generated by absorption of shorter wavelength of infrared radiations.
In the light of the above two statements,choose the correct answer from the options given below.

Explain Ozone Depletion in the Stratosphere.