Bob Operates a Machine for His Employer,Mighty Horse

Bob operates a machine for his employer,Mighty Horse.Bob is inattentive one day,and sprains his thumb as a result.Bob has to go to the doctor and is unable to work for two days.Assuming he appropriately files a claim for workers' compensation and that the employer carries workers' compensation insurance,which of the following is true?

A) Bob cannot receive workers' compensation, because he only had a strain and did not actually receive a permanent injury.
B) Bob cannot receive workers' compensation, because he negligently caused his own injury.
C) Bob can receive some workers' compensation, but his recovery will be reduced based on the comparative negligence doctrine.
D) Bob can receive workers' compensation, and he can also sue his employer for damages in civil court.
E) Bob can receive workers' compensation, but he cannot sue his employer for damages in civil court.