Which of the Following Situations Is/are Likely to Cause a Mutualistic

Multiple Choice

Which of the following situations is/are likely to cause a mutualistic relationship to change to a parasitic or predatory relationship?
I. A damselfish has no parasites for a cleaner fish to eat.
II. Acacia plants provide nectar to ants living in their thorns.
III. A plant and its mycorrhizal fungi are living in nutrient-rich soil.

A) I only
B) II only
C) III only
D) I and II only
E) I, II and III