The preparation of 2-hydroxypropanoic acid from ethanol requires a number of stages. $\text{C}_2\text{H}_5\text{OH} \rightarrow \rightarrow \rightarrow \text{CH}_3\text{CH(OH)CO}_2\text{H}$ Which of the following statements about this synthesis are correct?
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct