The principal constituent of mineral X is calcium carbonate, $\mathrm{CaCO_3}$. X also includes very small particles of silicon(IV) oxide, $\mathrm{SiO_2}$. No other substances are present in X. Which row identifies two statements that are correct about X?
- Astatement 1: X is a compound; statement 2: X contains exactly four different elements
- Bstatement 1: X is a compound; statement 2: X contains exactly five different elements
- Cstatement 1: X is a mixture; statement 2: X contains exactly four different elements
- Dstatement 1: X is a mixture; statement 2: X contains exactly five different elements