The correct option is A Principle
Accounting entries are recorded as per the generally accepted accounting principles. If any of these principles are violated or ignored, errors resulting from such violations are known as errors of principle. An error of principle may occur due to incorrect classification of expenditure or receipt between capital and revenue. This is very important because it will have an impact on financial statements. It may lead to under/overstating of income or assets or liabilities, etc. For example, the amount spent on additions to the buildings should be treated as capital expenditure and must be debited to the asset account. Instead, if this amount is debited to the maintenance and repairs account, it has been treated as a revenue expense. This is an error of principle. Transactions recorded in contravention of accounting principles result in error of principles.