Options for carpet: Blue (B), Gray (G) or Beige (Bg)
Options for wall color: White (W), Pale Yellow(P), Off-while (O)
If Chantay chooses Blue, we have the combinations BW, BP and BO
If Chantay chooses Gray, we have GW, GP and GO
If Chantay chooses Beige, we have BgW, BgP and BgO
Total: 9 choises