Final answer:
Confirmations for non-discretionary accounts must be sent within 5 business days according to the recordkeeping and confirmation requirements of 12 CFR 12.
Step-by-step explanation:
Under the provisions of the recordkeeping and confirmation requirements of 12 CFR 12, trust operations must ensure that confirmations are sent for non-discretionary accounts within 5 business days. This regulation is part of the oversight of financial institutions and ensures that clients receive timely confirmations of securities transactions that are executed in their accounts. The five-day period allows institutions sufficient time to process the transactions and send out confirmations to account holders.