Dr．Deprez holds the view that depression call be frustrating____________________(因为要从抑郁症中恢复到正常需要时间)．

A ) She will wait for Tom and go to the post office together. B) She will drop some letters in the mail box on her way home. C) She will buy Tons some stamps and envelopes at rite post othce on her way home. D) She will buy some envelopes for Tom on her way home.