Acids are able to react with metal oxides, carbonates and metals. Which of these reactions gives off a gas?
- Aacid with metal oxide: ✓, acid with carbonate: ✓, acid with metal: ✓
- Bacid with metal oxide: ✓, acid with carbonate: ✗, acid with metal: ✗
- Cacid with metal oxide: ✗, acid with carbonate: ✓, acid with metal: ✓
- Dacid with metal oxide: ✗, acid with carbonate: ✓, acid with metal: ✗