In industry, ethanol is made either by fermentation or by reacting ethene with steam. Which row is correct?
- AFermentation uses a temperature of $100\,^\circ\text{C}$; ethene + steam uses a temperature of $350\,^\circ\text{C}$.
- BFermentation needs the presence of yeast; ethene + steam does not need a catalyst.
- CFermentation is a slow reaction; ethene + steam is a fast reaction.
- DFermentation gives a high yield of ethanol; ethene + steam gives a low yield of ethanol.