What Did the Marketing Research Association Do in 2005 That

What did the Marketing Research Association do in 2005 that changed the credentialing of marketing research professionals?

A) They brought a lawsuit against several practitioners who were not qualified to practice marketing research.
B) They required all practitioners to take a test on qualitative research methods.
C) They created the Professional Researcher Certification program.
D) They required all AACSB accredited colleges to offer a course in marketing research.
E) Nothing has been done;one of the problems the industry has is that there is no credentialing program.