Chris Was Pretty Sure That He Was Earning a "C

Chris was pretty sure that he was earning a "C" in this history class,but his instructor pulled him aside after class and told him that he has been doing excellent "A" work all semester.Chris' internal immediate reaction is total surprise;however,his face shows mild surprise,and he comments that he thought he was doing pretty good work in the course.Which display rule is Chris illustrating?

A) overintensification of the affect
B) deitensified affect
C) neutralized feelings
D) masked feelings