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, calcium carbonate is completely oxidized.
D) No, the manufacturer puts a protective coating on chalk so that it will not burn.
E) No, the ignition temperature is extremely high.