In Which of the Following Ways Does the Fly Kill

In which of the following ways does the fly kill a fire ant?

A) A female fly lays an egg in the ant's soft tissues, and in the process of development, the resulting larvae kills the ant.
B) A fly (male or female) injects a poisonous substance in the ant which results in paralyzing its muscles.
C) A fly (male or female) injects a substance that sterilizes the ant.
D) A fly (male or female) causes the ant's death by depriving it from its necessary resources and habitat.
E) A fly (male or female) injects a substance that sterilizes the ant and paralyzes its muscles.