Consider an Experiment in Which Two Species of Plants, a and B

Consider an experiment in which two species of plants, A and B, are grown in separate pots in the same enclosure, either with an herbivorous insect that eats only plant A (treatment) or with no herbivores (control) . How do you expect growth for species B will differ between the two treatments?

A) If species B relies on defenses like hairs or spines, there will be no difference.
B) If species B relies on chemical defenses, its growth will be higher in the treatment.
C) If species B has defenses induced by volatile signals, its growth will be higher in the control.
D) If species B relies on constitutive defenses, its growth will be higher in the treatment.