Which of the Following Is the Best Example of Ethnocentrism

Which of the following is the best example of ethnocentrism?

A) Emmett does not like it when his brother pushes him.
B) Bria believes it is wrong for Tessa to let her children sleep in their own room; to Bria, it is normal for children to sleep in the same room as their parents.
C) Finn wants his parents to pay attention to him so he spills his water all over the kitchen floor.
D) Ina believes that she is the best actress in her school and is angry when she is not chosen for the lead role in the school play.
E) After Wynn visits Japan for the first time, she decides that the Japanese have the best train system in the world.