Which statement describes a chemical reaction?

A chemical reaction is a process in which one or more substances are converted into different substances with different chemical and physical properties.

a

Reactants form products when atoms change state.
b
Products form reactants when atoms are rearranged.
c
Reactants form products when atoms are rearranged.
d
Products form reactants when atoms change state.

c

Reactants form products when atoms are rearranged.