Accounting for IGCSE & O level - The Fundamentals Of Accounting (Section 41 - No. 11)

In the context of a cash book, what does the term 'double entry' mean?

Recording a transaction twice in the same column.

Recording a transaction in both the cash and bank columns.

Recording a transaction in the cash book and the general ledger.

Recording a transaction only when it affects both cash and bank.

Double entry means recording in cash book and general ledger.