The correct option is D Contra entry
When there is a transaction that relates to both cash and bank, this will be written on one side of bank column and on other side of cash column. Such transactions are known as "Contra entries". In case cash is withdrawn from bank for office use, its is entered on the credit side of bank column and also in the debit side of cash column of the cash book. In case cash is deposited in the bank, the amount is recorded on the debit side of bank column and on the credit side of cash column of the cash book. The letter "C" is written in the LF column on both sides against these entries. These entries are not to be posted into ledger.