Chalk Is Mostly Calcium Carbonate

Multiple Choice

Chalk is mostly calcium carbonate.Could chalk dust catch fire and burn in air?

A) Yes, the carbon in the chalk would burn.
B) Yes, calcium is a reactive metal that will burn.
C) No, the carbon in the carbonate ion is already in its highest oxidation state.
D) No, the manufacturer puts a protective coating on chalk so that it will not burn.
E) No, the ignition temperature is extremely high.