Answer:
E. A, B and C only.
Step-by-step explanation:
The cell theory was formulated by Theodor Schwann, Matthias Schleiden, and Rudolph Virchow. It consist of 3 major components:
- The cell is the basic unit of life
- All living organisms are made of cells
- Cells arose from pre-existing cells.
Options A, B, and C are in accordance with the cell theory.
Hence, the correct option is E.