There are 15 giant tritons and 10 hermit crabs on a tropical beach. these populations have a commensal relationship. hermit crabs use the empty shells of dead giant tritons to protect their hind-ends. if the giant triton population size suddenly decreased to 2, how would it affect the size of the hermit crab population? a. the hermit crab population would increase. b. the hermit crab population would decrease. c. the hermit crab population would go extinct. d. the hermit crab population would stay the same.