The correct answer is a Total mistake Errors of commission occur when a transaction is incorrectly recorded in the record books. ?These types of errors are concerned with arithmetical accuracy. Few examples of error of commission are:Entering the wrong amount in the correct subsidiary book. Posting the correct amount in the wrong subsidiary book. Posting the wrong amount to the correct side of the account. Posting the correct amount to the wrong side of the account. Posting to the wrong account of the same class.