The Scientist(s)given Credit for Adding the Third Tenet (All Cells

Multiple Choice

The scientist(s) given credit for adding the third tenet (all cells come from preexisting cells) to the cell theory is (are)

A) Mathias Schleiden and Theodore Schwann.
B) Rudolf Virchow.
C) Louis Pasteur.
D) Robert Hooke.
E) Antony van Leeuwenhoek.