Carl Stehle told his students Thomas Paine' s story in order to ______.
A．teach the students how to write an essay on preventing polystyrene from harming the environment
B．inspire the students to do something to persuade the Board of Education to change its decision
C．ask the students to work hard together to fight against the decision made by the Board of Education
D．let them know the power and influence of the effective essay written by Thomas Paine in the past