One of the Criticisms of Rogers's Work Was That

One of the criticisms of Rogers's work was that:

A) training in his methods required a medical degree and a lengthy period of specialization.
B) he ignored those factors of which the clients were not consciously aware but which could influence behavior.
C) he did not verify the accuracy of his reports.
D) his data did not rely on objective observation and were not gathered in a controlled and systematic fashion.