All of the Following Are Shortcomings of Cattell's Work And/or

Multiple Choice

All of the following are shortcomings of Cattell's work and/or theory except one. Which is NOT a shortcoming?

A) He incorrectly assumed genetic differences among the "races."
B) He did far too much experimental research and far too little correlational research.
C) His 16PF is not among the most used and cited tests.
D) The world-wide increase in IQ scores poses serious problems for his point of view.