1) Some sacrifices are made for ideals. People who believe in justice, such as Martin Luther King Jr. and Nelson Mandela, often make sacrifices for their beliefs. (2) In fact, both of these leaders spent time in prison because they stood up for their beliefs. (3) It is upsetting to think that society punished these people who are now considered heroes. (4) The sacrifices they made helped change the world.
Which sentence is off topic?
A. the first sentence
B. the second sentence
C. the third sentence
D. the fourth sentence