Your source table contains sales data for multiple countries. You need to calculate sales tax differently for each specific country. The sales tax for some countries requires multiple steps to calculate. What is the recommended method you should use?

Use a Case transform to separate the countries, then apply the Sales Tax Calculation Using Query transforms.

Use a Validation transform to create the sales tax calculations 

Use a Query transform and the Decode ( ) function to apply the sales tax calculations 

Use the SQL transform and specify the sales tax calculation in the SQL statement.