Final answer:
In an expenditure system with proper internal controls, accounts payable is responsible for paying vendor invoices.
Step-by-step explanation:
The correct answer to the question is option C: Accounts payable is responsible for paying vendor invoices. In an expenditure system with proper internal controls, it is the responsibility of the accounts payable department to process and pay vendor invoices accurately and in a timely manner. This includes verifying the accuracy of the invoices, ensuring proper documentation is in place, and obtaining necessary approvals before making payments.
The other tasks mentioned in the options are correctly performed in an expenditure system with proper internal controls. Cash disbursements maintain the check register to track payment transactions, and accounts payable maintains the accounts payable subsidiary ledger to keep a record of outstanding invoices and payments.