In Describing the Universe Using His Equations of General Relativity

Multiple Choice

In describing the universe using his equations of general relativity, Einstein assumed that it was isotropic (the same in all directions.) What recent observations have confirmed that the universe is isotropic on the large scale?

A) the discovery of pulsars
B) the discovery of cannibal galaxies
C) measurements of the 3-degree cosmic background radiation
D) measurements of neutrinos from Supernova 1987A
E) the discovery that there is really nothing very good on TV, no matter which way you point your dish (antenna)