A Client Is Diagnosed with a Disorder That Has an Autosomal

A client is diagnosed with a disorder that has an autosomal dominant inheritance pattern.A review of the client's family history and pedigree does not reveal any ancestors with the disorder.How should the nurse interpret this finding?

A) Errors have been made in the documentation of the client's history.
B) Some ancestors experienced effects that were so minor they were not recognized.
C) A de novo mutation has occurred.
D) The client's genetic testing should be repeated.