Ted Has Been Assigned to Work on a Linguistics Project

Ted has been assigned to work on a linguistics project with a mature student in her 40s. Ted is worried that she won't be as sharp and motivated as a younger student. He recognizes that this is a prejudice and works to suppress it. It can be expected that Ted's work on the project would be:

A) poor because his worry about the returning student is distracting him
B) good because he wants to compensate for the returning student's possible failings
C) poor because it takes effort to suppress the stereotype
D) good because his worry will challenge the returning student to work harder