Which of the Following Is an Example of Perception Data

Which of the following is an example of perception data?

A) students participating in the Check-in, Check-Out (CICO) intervention exhibited a 15% decrease in office discipline referrals
B) the school counselor conducted 84 consultations with parents during the past year
C) for students who completed the attendance group, there was a 1.2 mean increase in response to the item "I look forward to coming to school"
D) 6 of the 10 students in the anger management group exhibited an increase in grade point average