Polar stratospheric clouds (PSCs) are formed when temperatures fall so low that water vapour and several other types of molecules in the stratosphere condense into extremely small icy particles. Diatomic molecules have a high tendency to bind to these PSCs and rise up into the atmosphere.
With regard to the assertion and reason, choose the correct option.
Assertion [A]: The ozone layer near the poles is more susceptible to destruction.
Reason [R]: Chlorine molecules bind to PSCs.