The diagram gives the structural formula of mevalonic acid. Which reagent and conditions would react with mevalonic acid to form an organic compound that contains no chiral carbon atom?
- Aheat under reflux with $\text{CH}_3\text{OH}/\text{H}^+$
- Bheat under reflux with $\text{Cr}_2\text{O}_7^{2-}/\text{H}^+$
- C$\text{Na}$ at room temperature
- D$\text{PCl}_5$ at room temperature