A Student Told All of His Friends a Wrong Answer

Multiple Choice

A student told all of his friends a wrong answer for a subjective test question just before the test.The teacher could find no reference to the answer in the textbook,but since 10 students in the class had put the same answer,he figured it must be right and marked it correct.Which social phenomenon is this an example of?

A) testing
B) subjectivity
C) objectivity
D) conformity