Propanone and hydrogen cyanide react by the mechanism illustrated. Which of the following statements about this mechanism are correct? 1. $\text{CN}^-$ acts as an electrophile. 2. The reaction is an addition reaction. 3. Heterolytic bond breaking occurs.
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct