5. The court must transfer a termination of parental rights or foster care proceeding involving an Indian child to the tribe. . .
(a) only if the child, the child's parent or Indian custodian resides or is domiciled on the reservation
(b) only if the tribe has a tribal court and that court is a court of record
(c) always, with very limited exceptions
(d) only if the child, the child's parent or Indian custodian requests the transfer