Which of the Following Provide Evidence of Alter Identities in DID

Which of the following provide evidence of alter identities in DID?

A) Alter identities are significantly less well defined in childhood and appear in adulthood usually after treatment by a therapist has begun
B) Relatives of individuals with DID rarely report having seen evidence of alter identities before treatment
C) Individuals who develop DID usually have strong imaginations and a rich fantasy life that enables them to play different roles with some ease
D) All of the above