When Griffith Experimented with Two Types of Streptococcus Pneumoniae, He

When Griffith experimented with two types of Streptococcus pneumoniae, he found that:

A) the deadly strain killed the mice, but the nondeadly strain did not.
B) if the deadly strain was heat-killed before injection, the mice lived.
C) if the nondeadly strain was mixed with the heat-killed, nondeadly strain before injection, the mice died.
D) if the nondeadly strain was mixed with the heat-killed, deadly strain before injection, the mice died.