Manganese(IV) oxide, $\text{MnO}_2$, appears as a black solid. The equation below represents the reaction of manganese(IV) oxide with dilute hydrochloric acid. $\text{MnO}_2 + 4\text{HCl} \rightarrow \text{MnCl}_2 + 2\text{H}_2\text{O} + \text{Cl}_2$ This reaction gives a pale pink solution. Which properties of transition elements are demonstrated by this reaction?
- A1 and 3
- B1 and 4
- C2 and 3
- D2 and 4