Vouching is concerned with:

The correct answer is All of the above.

Key PointsVouching - Vouching is a part of an audit that aims to validate the transactions included in a company's book of accounts and is frequently referred to as "the backbone of auditing."

Important PointsThe objective of vouching are as follows - 

• To examine the accounting transactions recorded in the books of accounts by using  documented evidence 
• To evaluate the reliability and adequacy of such documentary evidence
• To determine whether the transactions listed in the books of account are accurate
• To make certain that every transaction is accurately recorded in the books of accounts
• To ensure that all transactions and entries are backed by reliable evidence
• To guarantee that there are no fictitious transactions recorded in the books of accounts
• To ensure that all business-related transactions are accurately recorded in the books
• To ensure that each transaction has been duly validated by a trustworthy person.