Harrison is making bread. He prepares some dough and places it into the oven. Harrison realizes a gas, carbon dioxide, is coming out of the dough as it bakes.
Which options are true about carbon dioxide?

A) It is created from the atoms of the dough.

B) It is the dough changing states from solid to gas.

C) It is a new gas released when atoms are destroyed.

D) It is made of atoms that did not exist before.