All of the following are necessary components of internal control over cash except

A) a petty cash system
B) a cash reserve
C) a bank reconciliation
D) the daily deposit of all receipts in the company's bank account

While a cash reserve can be useful for managing cash flow, it is not a necessary component of internal control over cash. The other options listed are all important components for ensuring the accuracy and security of a company's cash transactions. A petty cash system provides a way to track small cash expenses and prevent fraud. A bank reconciliation helps to ensure that the company's records of its cash transactions are accurate and complete. And daily deposits of all receipts in the company's bank account help to prevent theft or loss of cash.