In 1928, Frederick Griffith Injected Living S (Smooth) Streptococcus Pneumonia

In 1928, Frederick Griffith injected living S (smooth) Streptococcus pneumonia into mice, and the mice died. When he injected living R (rough) Streptococcus pneumonia into mice, the mice lived. When he injected heat-killed S bacteria into mice, the mice lived. What was the result when he mixed heat-killed S bacteria with live R bacteria and injected this mixture into mice?

A) The mice died, and living bacteria that appeared smooth could be isolated from the dead mice.
B) The mice lived, and living bacteria that appeared smooth could be isolated from the living mice.
C) The mice died, indicating that the heat-killed S bacteria came back to life.
D) The mice lived and neither smooth nor rough-appearing bacteria could be isolated from the living mice.