In the human body, glucose is oxidised through a complex series of reactions, and this releases energy. The Krebs cycle is one stage in this series. In one reaction of the Krebs cycle, fumaric acid is changed into malic acid. $\text{HO}_2\text{CCH{=}CHCO}_2\text{H} \rightarrow \text{HO}_2\text{CCH(OH)CH}_2\text{CO}_2\text{H}$ Which reagents could be used to carry out this change in the laboratory?
- Aacidified $\text{KMnO}_4$
- B$\text{Br}_2(\text{aq})$ followed by hot $\text{NaOH}(\text{aq})$
- C$\text{H}_2\text{O}$ with Pt catalyst
- Dsteam with $\text{H}_2\text{SO}_4$