Problems with Freud's Theories of Sexuality Result from Which of the Following

Problems with Freud's theories of sexuality result from which of the following?

A) Freud's theories are generally correct, but the problems stem from children not telling the truth about their sexual desires.
B) Many parents will not let their children be put through the rigorous psychoanalytical tests necessary to support Freud's theories.
C) There are few, if any, problems with Freud's theories of sexuality. They have withstood the test of time.
D) Because most of his theories relate to the subconscious level, they are difficult to study with current scientific methods.