During the Griffiths experiment, dead rats were examined. He discovered S bacteria even though rats were injected with R bacteria and dead S bacteria. Which of the following conclusions could you make?
a. Heat killed S bacteria contain something that transforms R bacteria into S bacteria.
b. Only S bacteria can survive in dead rats.
c. Bacteria can mutate so quickly even R bacteria sometimes kill rats.
d. R bacteria that kill rats turn into S bacteria.
