Assertion : Normally rain water has a pH of 5.6
Reason : `H^(+)` ions are formed by the reaction of rain water with carbon dioxide present in the air.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the c orrect explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.
