Determine whether each cash receipts procedure is an internal control strength or weakness.

Cash receipts

The clerk who has access to cash in the register cannot access the accounting records to change transaction details.

A list of cash receipts by mail includes the sender$\text{'}$s name, the dollar amount, and an explanation of why the money was sent.

The company investigates all customer questions regarding an incorrect account balance.

If a sales clerk makes an error in recording a cash sale, they can access the register's electronic record to correct the transaction.

One of the two employees tasked with opening mail is also the recordkeeper for the business.

The supervisor has access to both cash and the accounting records.