What methods can be used to prevent iron from rusting?
- Acoating with zinc ✓, painting ✓, washing with salt water ✓
- Bcoating with zinc ✗, painting ✓, washing with salt water ✓
- Ccoating with zinc ✓, painting ✓, washing with salt water ✗
- Dcoating with zinc ✓, painting ✗, washing with salt water ✗