Both ants and aphids benefit. Both ants and aphids are unaffected. The ants benefit and the aphids are harmed. The aphids benefit and the ants are unaffected.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Aphids are small insects that sometimes live near ants. The ants protect the aphids from predators. The aphids produce a sweet substance that the ants eat. Which statement describes the relationship between ants and aphids?
Possibilities:
- Both ants and aphids benefit.
- Both ants and aphids are unaffected.
- The ants benefit and the aphids are harmed.
- The aphids benefit and the ants are unaffected.

Both ants and aphids benefit.