Griffith performed an experiment where mice were killed when injected with a mixture of heat killed S-trained and live R-string of Streptococcus, but mice were alive when the strains were injected separately. mice were killed because

Options

A. Proteins from heat killed S strain made R strength virulent
B. RNA from heat killed S strain made R strain virulent
C. Both DNA and RNA from heat killed strain transformed the R strain and made it Pathogenic
D. DNA from heat killed S strain transform the R strain and made it virulent