According to the Michelson and Morley experiments, which of the following is NOT true? a The speed of light is constant and is independent of the motion of the source or the observer. b Waves had to have some medium to travel through. c A beam of light that travels parallel to the aether would take longer than the beam that travels perpendicularly to the aether. d The laws of physics are the same in all frames of reference that are moving uniformly