Which two-stage process changes cyclohexanol into cyclohexane-1,2-diol?
- Astep 1: heat strongly with $\text{Al}_2\text{O}_3$; step 2: add cold dilute $\text{KMnO}_4$ and $\text{H}_2\text{SO}_4$
- Bstep 1: heat strongly with $\text{Al}_2\text{O}_3$; step 2: heat with steam and $\text{H}_2\text{SO}_4$
- Cstep 1: reflux with ethanolic $\text{NaOH}$; step 2: add cold dilute $\text{KMnO}_4$ and $\text{H}_2\text{SO}_4$
- Dstep 1: reflux with ethanolic $\text{NaOH}$; step 2: heat with steam and $\text{H}_2\text{SO}_4$