Write SQL query to solve given problem: Find the countries in south Asia which are in the low-income group. What is the source of their recent income and expenditure data? List it alongside the table name of the countries.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT TableName, SourceOfMostRecentIncomeAndExpenditureData FROM Country WHERE Region = 'South Asia' AND IncomeGroup = 'Low income'