Which of the Following Statements Concerning Oxides of Carbon Is

Multiple Choice

Which of the following statements concerning oxides of carbon is false?

A) Both carbon monoxide and carbon dioxide are produced when an organic substance is burned in an oxygen-lean environment.
B) Both carbon monoxide and carbon dioxide are toxic in large quantities.
C) Both carbon monoxide and carbon dioxide are colorless.
D) Both carbon monoxide and carbon dioxide support most combustion reactions.
E) Both carbon monoxide and carbon dioxide are odorless.