Suppose Gigantic Health Cooperative Doesn't Hire Mandy Morrison Solely Because

Suppose Gigantic Health Cooperative doesn't hire Mandy Morrison solely because she is a graduate of a particular foreign medical school, which is not known for the high quality of its graduates. Yet Mandy is actually more qualified than the average graduate of American medical schools. This is an example of

A) monopsony exploitation.
B) human-capital discrimination.
C) statistical discrimination.
D) irrational behavior.