Given below are two statements, one labelled as Assertion (AS) and the other labelled as Reason (R). Select your answer from the codes given below:Assertion (AS): The metropolitan cities are numerically dominated by male adult population.Reason (R): Migration is age and sex selective.Codes:

• A. Both (AS) and (R) are correct and (R) is the correct explanation of (AS).
• B. Both (AS) and (R) are correct but (R) is not the correct explanation of (AS).
• C. (AS) is correct, but (R) is false.
• D. (AS) is false, but (R) is correct.