The main difference between a theory and a law is

A$)$ Theories can never become laws.

B$)$ Laws can become theories so long as they are tested frequently by different methods.

C$)$ A theory is the same as a law.

D$)$ Theories are supported by significant volumes of research but laws can be tested over and over again with the same result.

E$)$ A theory is not supported by a hypothesis but a law is$.$