Terry and James are partners in a mystery lab. The boys have a compound light microscope and several unlabeled slides. Their task is to find out everything they can about the samples on the slides. Terry puts a slide on the microscope stage and focuses the lenses on the sample. He can see that the sample is made up of tiny cells. Even without knowing anything else about the cells he sees, what can Terry reasonably conclude about them? A. The cells are currently alive. B. The cells came from animals or plants. C. The cells were produced by other cells. D. The cells help an organism to fight off illnesses.