Frederick Griffin Experimented with Two Strains of Bacteria by Injecting

Frederick Griffin experimented with two strains of bacteria by injecting them into mice in various combinations. He found that when you mix dead bacteria with live, it's possible for the live strain to acquire some of the traits of the dead one. Why was this important?

A) No one knew dead things could influence the traits of living things.
B) It showed that whatever determined the traits of one organism could somehow get into and alter the traits of another.
C) It showed that some bacteria caused pneumonia, possibly leading to a cure for the disease.
D) No one before had successfully used bacteria to infect mice with pneumonia.
E) It showed that dead strains of bacteria could be combined with live and would "revive" with new traits.