The reaction pathway for the synthesis of paracetamol, a mild painkiller, is provided below.
Which step or steps in this synthesis involve(s) a reduction reaction?
- step \(\text{I}\) only
- step \(\text{II}\) only
- steps \(\text{I}\) and \(\text{III}\) only
- steps \(\text{I, II}\) and \(\text{III}\)