If a Play Therapist Cannot Keep an Appointment with a Child

If a play therapist cannot keep an appointment with a child, he or she should

A) ask the child to write him or her a letter while he or she is gone.
B) explain to the child in great detail why he or she will be unavailable.
C) only contact the parent so they can reschedule.
D) tell the child at the beginning of the previous session.
E) tell the child at the end of the previous session.