$CH_3CHO + HCN$ $\xrightarrow{\text{H}^+} CH_3CH(OH)CN$ $\xrightarrow{\text{H}_3\text{O}^+} CH_3CH(OH)COOH$. In the above reaction,a chiral center is generated. What will be the nature of the resulting acid?
- A$20\% \ d + 80\% \ l$ isomer
- B$d$-isomer
- C$l$-isomer
- D$50\% \ d + 50\% \ l$ isomer (racemic mixture)
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