What is one reason for developing alternatives to the "Big Five" traits based on clinician interviews?

a) Questionnaires are costly and time-consuming, whereas clinician interviews are more efficient and cost-effective.
b) Clinicians generally provide more detailed and reliable assessments of personality than can be provided by questionnaire measures.
c) Most people prefer to speak with an interviewer rather than complete a questionnaire; consequently, interviews have higher validity.
d) The high rate of psychological disorders makes it imperative to gather direct evidence of the possibility that such disorders influence personality.

B