Which of the Following Is One Difference Between a Child's

Which of the following is one difference between a child's mood and his/her affect?

A) A therapist must ask a child about his/her feelings in order to assess affect?
B) Affect usually refers to the child's long-term emotional disposition.
C) A therapist can assess a child's affect by observing him/her.
D) Affect can range from positive to negative, but mood usually refers only to negative feelings.