In the reaction sequence shown below, an alkane is changed into a carboxylic acid over several steps. $\text{C}_{10}\text{H}_{22} \xrightarrow{\text{stage 1}} \text{C}_2\text{H}_4 \xrightarrow{\text{stage 2 (catalytic hydration)}} \text{C}_2\text{H}_5\text{OH} \xrightarrow{\text{stage 3}} \text{CH}_3\text{CO}_2\text{H}$. Which processes take place at stage 1 and at stage 3?
- Astage 1: condensation; stage 3: combustion
- Bstage 1: cracking; stage 3: dehydration
- Cstage 1: cracking; stage 3: oxidation
- Dstage 1: dehydration; stage 3: combustion