Sulfur can be burned to form sulfur dioxide. Which row gives a source of sulfur and a use of sulfur dioxide?
- Asource of sulfur: the air; use of sulfur dioxide: food preservative
- Bsource of sulfur: the air; use of sulfur dioxide: water treatment
- Csource of sulfur: underground deposits; use of sulfur dioxide: food preservative
- Dsource of sulfur: underground deposits; use of sulfur dioxide: water treatment