The oxides of two elements, X and Y, are each dissolved separately in water, and the pH of both solutions is then measured. X has pH 1 and Y has pH 13. Which statement about X and Y is correct?
- AX oxide acidic, Y oxide basic, X metal, Y non‑metal
- BX oxide acidic, Y oxide basic, Y metal, X non‑metal
- CY oxide acidic, X oxide basic, X metal, Y non‑metal
- DY oxide acidic, X oxide basic, Y metal, X non‑metal