Which of the Following Scenarios Demonstrates the Teacher Expectancy Effect

Which of the following scenarios demonstrates the teacher expectancy effect?

A) Karrie's reading achievement declines from one testing to the next because she does not like her teacher.
B) Lonnie's reading achievement increases dramatically after he is criticized by his teacher for being a poorly motivated student.
C) Linda's achievement test scores increase because her teacher, who feels Linda is gifted, begins to expect more of her.
D) Bobby's achievement test scores increase because he wants to show his teacher that he is smarter than everyone else in class.