Dr Jones Is Working with a Client from a Culture

Dr. Jones is working with a client from a culture other than his own. He would like to use the deviation-from-the-norm criteria based on this. This would be inappropriate to use because

A) daily problems prompt people to seek treatment.
B) statistical deviance only offers guidelines for researchers.
C) cultures differ in how they define what is normal.
D) none of these are correct - this is in fact an appropriate criterion.