Which of the Following Is Not True About Brokerage Accounts

Which of the following is not true about brokerage accounts?

A) in a community property state a married woman must open a brokerage account with her husband
B) stock purchased in a custodian account may not be purchased on margin or held in bearer form
C) numbered accounts are permissible provided there is a record kept on file at the brokerage firm attesting to the actual ownership
D) if a fiduciary intends to buy stocks in a margin account the trust agreement authorizing the margin transactions must be kept on file at the brokerage firm