What is the difference between a chemical change and a physical change?

A. A physical change forms a new substance with different properties. While in a chemical change, the materials remain the same.
B. A chemical change forms a new substance with different properties. While in a physical change, the molecules remain the same.
C. A chemical change forms a different shape, such as by bending, folding, or melting, but does not form a new substance with different properties.