Here is what I know about bacterias:
Bacteria (singular: bacterium) are a large group of living things that can be found in many places. Like fungi, bacteria feed on other living things, which may be dead or alive. Bacteria are microorganisms. They can only be seen under a microscope. Bacteria and other microorganisms are living things. They have the characteristics of living things.
A is out. Because bacteria and other microorganisms are living thing. They have the characteristics of living things.
B is true. Bacteria do not reproduce by giving birth. If you search online, It will tell you that bacteria reproduce by binary fission.
C is true. Bacteria are microorganisms. They can only be seen under a microscope.
Therefore the answer is (3). B and C only.