I : Formation of A has proceeded with racemisation
II: Formation of B has proceeded with inversion. Select the correct statement:

I and II both are correct

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only I is correct

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only II is correct

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none is correct

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Solution

The correct option is A I and II both are correct
In $S_{N} 2$ inversion take place & in $S_{N} 1$ racemisation takes place via the formation of a carbocation.

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