Assertion (A): Chronic exposure to ozone is a possible contributor to forest decline.
Reason (R): Surface ozone is a greenhouse gas.
Identify the correct code:
1
Both (A) and (R) are true and (R) is the correct explanation of (A).
2
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3
(A) is true, but (R) is false.
4
(A) is false, but (R) is true.