Imagine That a Coyote Tobacco Plant Is Being Eaten by M

Imagine that a coyote tobacco plant is being eaten by M. sexta caterpillars. In response to these specific herbivores, the tobacco produces volatile chemicals that can travel through the air. Why?

A) to signal to other tobacco plants that caterpillars are in the area
B) to produce an odor that will deter other caterpillars from eating its leaves
C) to attract insect predators that will eat the caterpillars
D) to signal to other parts of the plant to produce more nicotine