A 4-year old male Thoroughbred horse presents to you for colic. During your work up, you note a painful enlargement at the root of the mesentery on rectal palpation. You suspect that the cause of the horse's colic are adults from the egg shown in the picture below. Which of the following drugs effectively kills the adult organisms that can cause this condition?
A-Rifampin
B-Ivermectin
C-Piperonyl butoxide
D-Praziquantel
E-Metronidazole
answer/B
