9. Which of the following describes an example of mutualism between a human and a microorganism? A. Mites feed on the skin of a human’s arm, killing cells and stealing nutrients
B. Ringworm feeds off of the skin cells of humans, causing a circle shaped rash
C. Bacteria in the small and large intestine help break down food and release nutrients D. Antibodies in the bloodstream recognize and kill a disease causing pathogen