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Optically active (S)-alpha-methoxyacetal...

Optically active (S)-`alpha`-methoxyacetaldehyde on reaction with MeMgX gave a mixture of alcohols. The major diastereomer 'P' on treatment with `MeI//K_(2)CO_(3)` gave an optically inactive compound. P is -

A

`i`

B

`ii`

C

`iii`

D

`iv`

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The statement optically active `(s) - alpha -` methoxy acetaldehyde is incorrect.
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