The correct option is D All of the above
A pheromone is a chemical an animal produces, which changes the behavior of another animal of the same species (animals include insects). Pheromones invoke a specific response in other membranes like recognition, warning and attraction. Examples of sex pheromone is Bombykol (silkworm), Queen substance (honey bee), Civetone (cat), Muskkone (muskdeer); aggregation pheromones Geradiol (honey bee).