Which of the following statements) about the history of transaction processing isare) true? (Check all that apply.

When computers were invented, we digitized journals and ledgers and created transaction files and master files that did the job of paper. based journals and ledgers.

Originally, people kept track of transactions using a single-entry accounting system

When the number of master files proliferated, we combined multiple files into databases, which have grown much smaller and simpler

We used double bookkeeping systems with journals and ledgers and paperbased financial reports hundreds of years.