$A$ : Montreal Protocol suggested the reduction of $ODS$.
$R$ : $A$ landmark international agreement taken in Earth summit held at Rio de Janeiro.
$R$ : $A$ landmark international agreement taken in Earth summit held at Rio de Janeiro.
- AAssertion and Reason both are correct and also correct explanation.
- BAssertion and Reason both are correct but not explanation of assertion.
- CAssertion is correct,but Reason is incorrect.
- DBoth Assertion and Reason are incorrect.
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