Statement-1: `Na^(+)` and `AI^(3+)` are isoelectronic but the magnitude of ionic radius or `AI^(3+)` is less than that of `Na^(+)`.
Statement-2: The magnitude of effective nuclear charge of the outer most shell electrons in `AI^(3+)` is greater than that of `Na^(+)`.

Options

A. If both assertion and reason are true annd the reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but the reason is false
D. if assertion is false but the reason is true

Answer

A