How did Edwin Hubble mistakenly support the Steady State Theory of the Universe?
a. He did not realize there were two different Period-Luminosity relationships in different kinds of Cepheids and he used the wrong one.
b. He used the wrong value for the Doppler Shift effect due to velocity.
c. He used the wrong value for calculating Dust Exctiction within the Milky Way Galaxy.
d. He used the wrong value for the length of the light year.