Coating iron with zinc stops the iron from rusting, even if the zinc layer is scratched. Coating iron with tin also stops the iron from rusting, but if the tin is scratched the iron beneath begins to rust. Which statement is correct?
- ABoth tin and zinc prevent iron from rusting by sacrificial protection.
- BBoth tin and zinc prevent iron from rusting by stopping water and carbon dioxide reaching the iron.
- CTin is more reactive than iron and prevents iron from rusting until it is scratched.
- DZinc loses electrons more easily than iron and prevents iron from rusting by corroding first.