The answer is (A) virus. In the medical field, it's considered non-living.
Carbon dioxide is released. Here is a diagram...
The answer to this is older, but it's not a proven fact even though schools teach it as if it were. It is still just a theory if you think about it with how much the earth moves, areas of rock could be complete upside down and no one would know, it would be like history in reverse.
B............................................. is the answer