Consider the following assertion and its reason.
Assertion: Phosphorus is kept in water.
Reason: It catches fire in the air.
1. Assertion is true, Reason is true and reason is correct explanation of assertion.
2. Assertion is true, Reason is true and reason but reason is not the correct explanation of assertion.
3. Assertion is true, Reason is false
4. Assertion is false, Reason is true