The reaction in which ethanal, $\text{CH}_3\text{CHO}$, combines with $\text{HCN}$ to give $2$-hydroxypropanenitrile is catalysed by $\text{NaCN}$. What features 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