After Working Hard and Earning Honors During His First Year

After working hard and earning honors during his first year in a difficult engineering program, Andrew was awarded the best student in his group. While handing him the certificate, his professor said, "Well done," without any enthusiasm, and Andrew also noticed the professor didn't meet his eye. From the professor's reaction, Andrew knew he was not happy with him for some reason. Which dimension of communication message is implied by the professor?

A) Relational
B) Task
C) Feedback
D) Noise