What is different about parasitism compared to the other biological relationships such as mutualism, predation, competition, and commensalism? A. A parasitic organism causes harm to other organisms as a result of the symbiotic relationship. B. The parasite must utilize a host organism that may or may not die as a result of the relationship. C. The host is neither helped nor hurt by the relationship and interaction with the parasitic organism. D. Both the parasite and the host are helped by the relationship and interaction with the parasitic organism.