单选题 Which of the following can be inferred concerning Freud's psychological views?

• (A) Freud tended to be critical of all psychologists who did not support his view of the libido as the sexual drive of fulfillment.
• (B) Freud tended to ascribe little importance to the hypothetical elan vital, even questioning its existence.
• (C) Freud tended to restrict the notion of the libido to matters of human sexuality, ignoring its broader role as a life drive.
• (D) Freud tended to view the libido as a mechanism of the conscious, but not of the collective or personal unconscious.
• (E) Freud failed to acknowledge the role of the conflicting desires of the individual in shaping the human libido.