Some Aspects of Sigmund Freud's Theories Are Said to Be

Multiple Choice

Some aspects of Sigmund Freud's theories are said to be unscientific. For example, in some instances Freud believed that current behavioral problems are the result of past unconscious conflicts. From a scientific point of view this is problematic because

A) no relationship between variables has been specified.
B) the hypothesis is not derived from a theory.
C) this idea is not testable.
D) there is no research hypothesis.