Jacinta is learning about the chemicals involved in breathing. Oxygen gas, water vapor, and carbon dioxide are all compounds formed by the chemical reactions between nonmetal elements. Which statement can Jacinta correctly make about the chemical properties of nonmetals?

A. Many nonmetals react with both metals and nonmetals.
B. Nonmetals are poor conductors of heat and electricity.
C. Many nonmetals are gases at room temperature.
D. Nonmetals react only with other nonmetals.