What Has Research Revealed About the Self-Serving Bias in Educational

What has research revealed about the self-serving bias in educational environments?

A) students,but not teachers,engage in self-serving biases.
B) teachers,but not students,engage in self-serving biases.
C) students attribute high grades to the hard work of the teachers and low grades to their own lack of effort.
D) professors take credit for student success but not student failure.