An adviser has custody of a client's securities or funds if the adviser A) accepts prepayment of advisory fees or has discretion over a customer's account B) has authority to withdraw funds from a client's account for the benefit of the adviser for the payment of the quarterly advisory fees C) uses a broker-dealer to hold the customer's funds and securities and has limited trading authority over the account D) maintains the customer's funds and securities in a joint account with the registered investment adviser