Given below are two statements:
Statement I: The concentration Chloroflurocarbons (CFCs) in the atmosphere has increased in the past few years.
Statements II: CFCs already present in the atmosphere will persist for many years.
In the light of the above statements, choose the correct answer from the options given below

Correct option is D

Statement I: The concentration of Chlorofluorocarbons (CFCs) in the atmosphere has increased in the past few years. This statement is false. The concentration of CFCs in the atmosphere has been declining, not increasing, in recent years. This decrease is largely due to the Montreal Protocol, an international treaty agreed upon in 1987, which led to the phase-out of the production and use of CFCs and other ozone-depleting substances. Since then, there has been a significant reduction in the release of CFCs into the atmosphere.
Statement II: CFCs already present in the atmosphere will persist for many years. This statement is true. CFCs have a long atmospheric lifetime, ranging from 20 to over 100 years. This means that even after their production and use have been significantly reduced, the CFCs previously emitted into the atmosphere will continue to exist and impact the ozone layer for many years.
 The correct answer is (d) Statement I is false but Statement II is true.