Which plot description is the best example of a tragedy?
A. An old man must give up his most prized possession his car to raise enough money to send his granddaughter to school.
B. An arrogant businessman loses his money and his freedom when he is sent to jail after his auto company fails to do proper safety inspections.
C. A teenage couple is split apart when the young boy's father is transferred to a new position and the boy's family must move away.
D. An environmental activist struggles to save a historical landmark, only to see the building destroyed in a fire.