Both structural isomerism and stereoisomerism need to be taken into account when you answer this question. When a molecule has two non-identical chiral carbon atoms, there are four optical isomers. What is the number of isomers with molecular formula $\text{C}_7\text{H}_{14}\text{O}$, a five-membered ring and a tertiary alcohol group?
- A4
- B5
- C9
- D13