Based on the passage about Louis Pasteur, which statement is a fact?


A.

Louis Pasteur was clever when he decided to inject nerve tissue from sick animals into healthy animals.


B.

Louis Pasteur knew it took about a month for signs of rabies to show up in a victim.


C.

Louis Pasteur was one of the greatest scientists who ever lived.


D.

Louis Pasteur should have studied his laboratory animals more closely.