MrKennedy,a Middle-Class Caucasian Teacher,assigns Lower Grades When Evaluating the Work

Mr.Kennedy,a middle-class Caucasian teacher,assigns lower grades when evaluating the work of two Native American students in his high-school physics class than he does for comparable work from other students.The most valid interpretation of Mr.Kennedy's behavior is that he appears to

A) be conforming to conventional ethnic values.
B) be demonstrating a laissez-faire personality.
C) have a negative schema regarding Native Americans.
D) mistrust people who are culturally inferior.