Vibrations from an Insect Trapped Inside a Carnivorous Sundew and Thrashing

Vibrations from an insect trapped inside a carnivorous sundew and thrashing around to escape stimulate the sundew's response. What happens next?

A) The sundew's leaves snap shut and their spiked edges mesh, trapping the insect.
B) An electrical shock kills the insect.
C) Thigmotropism is activated, and it kills the insect.
D) The plant secretes a cocktail of digestive enzymes that rapidly breaks down the insect's body.