Calcium combines with cold water to give hydrogen. When lead is heated in air, it reacts only slowly to make an oxide, but it shows almost no reaction with steam. Silver shows no reaction with air or water. Zinc, on heating with steam, produces hydrogen. What is the reactivity order, beginning with the least reactive?
- Acalcium, lead, zinc, silver
- Bcalcium, zinc, lead, silver
- Csilver, lead, zinc, calcium
- Dsilver, zinc, lead, calcium