Which Is the Key Difference Between the Ellis Form of Therapy

Which is the key difference between the Ellis form of therapy and the Beck form of therapy?

A) Beck's therapy deals with more severe problems than does the Ellis therapy.
B) Beck's therapy takes a longer time to accomplish its goals than does the Ellis therapy.
C) In the Ellis therapy, the therapist is more empathetic than in the Beck therapy.
D) In the Ellis therapy, the therapist is more confrontational than in the Beck therapy.