Which among the following is $NOT$ a feature of $S_N1$ mechanisms?
- AInvolve only backside attack of nucleophile.
- BIn an optically active substrate the product formed is racemic.
- CTwo step mechanism.
- DHeterolysis of $C-X$ bond forms carbocation intermediate.
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Statement $I$: $(CH_3)_3C-CH_2-Cl$ will undergo $S_N1$ reaction even though it is a primary halide.
Statement $II$: It will not undergo $S_N2$ reaction very easily even though it is a primary halide.
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Statement $I$: $(CH_3)_3C-CH_2-Cl$ will undergo $S_N1$ reaction even though it is a primary halide.
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