Acids may react with metal oxides, carbonates and metals. In which of these reactions is a gas produced?
- Aacid with metal oxide ✓, acid with carbonate ✓, acid with metal ✓
- Bacid with metal oxide ✓, acid with carbonate \times, acid with metal \times
- Cacid with metal oxide \times, acid with carbonate ✓, acid with metal ✓
- Dacid with metal oxide \times, acid with carbonate ✓, acid with metal \times