The table shows a comparison of two properties of lithium and potassium. Which row is correct?
- Agreater density: lithium; greater tendency to form a positive ion: lithium
- Bgreater density: lithium; greater tendency to form a positive ion: potassium
- Cgreater density: potassium; greater tendency to form a positive ion: lithium
- Dgreater density: potassium; greater tendency to form a positive ion: potassium