Fred Griffith Discovered That When He Injected Mice with a Mixture

Multiple Choice

Fred Griffith discovered that when he injected mice with a mixture of dead pathogenic S cells and living harmless R cells of Streptococcus pneumoniae

A) the harmless dead S bacteria became pathogenic and killed the mice.
B) the mice died, and their bodies teemed with living pathogenic S strain cells.
C) the pathogenic S strain was transformed into the harmless R strain.
D) the mice lived, and their bodies teemed with living harmless R strain cells, and the pathogenic S strain cells were eliminated.
E) all of these occurred.