When ethanal, $\text{CH}_3\text{CHO}$, reacts with HCN to give 2-hydroxypropanenitrile, NaCN acts as the catalyst. What characteristics does the intermediate in this reaction have?
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct