The structure of santonin is illustrated below. Santonin is first reacted with warm dilute $\text{H}_2\text{SO}_4$. The product from this reaction is then treated with cold dilute acidified $\text{KMnO}_4$. This gives a final product, $Q$. How many hydrogen atoms in each molecule of product $Q$ will react with sodium metal?
- A2
- B4
- C5
- D6