Identify the item below that would cause the trial balance to not balance.

A $1,000 collection of an account receivable was erroneously posted as a debit to Accounts Receivable and a credit to Cash.

The purchase of office supplies on account for $3,250 was erroneously recorded in the journal as $2,350 debit to Office Supplies and credit to Accounts Payable.

A $50 cash receipt for the performance of a service was not recorded at all.

The purchase of office equipment for $1,200 was posted as a debit to Office Supplies and a credit to Cash for $1,200.

The cash payment of a $750 account payable was posted as a debit to Accounts Payable and a debit to Cash for $750.