Directions: The question consists of two statements, an assertion and a reason. The student must first determine whether each statement is true and if both are true find if the reason is the correct explanation of the assertion.

Assertion (A): Greenhouse gases tend to block heat waves escaping out of earth’s atmosphere, thus rising earth’s atmosphere.
Reason (R):  These gases also created a hole in the ozone layer thereby removing the atmospheric blanket that stops Ultra-Violet rays from coming inside.

1
Both A and R are true and R is the correct explanation of A.
2
Both A and R are true and R is not the correct explanation of A.
3
A is true but R is false.
4
A is false but R is true.
5
Both A and R is false

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