Rules for selection of the option. Option A- if statement of assertion is true and reason is also true and reason is correct explanation for assertion. Option B- if the statement of assertion is true and reason is also true  but reason is not correct explanation for assertion Option C-if statement of assertion is true but reason is false. Option D- if the statement of assertion is false but reason is true. Q.1- Assertion- Phosphorus needed to store under kerosene. Reason- It starts burning self​