An Important Lesson to Learn from the Stage-Based Model Proposed

An important lesson to learn from the stage-based model proposed by Kübler-Ross is

A) individuals can become effective providers of care for dying persons without having to listen to such persons
B) those who are coping with dying are still alive and often have unfinished needs that they may want to address
C) other individuals cannot learn from dying persons and thus come to understand themselves better
D) all of these
E) none of these