What should you do?

Note: This question it part of a series of questions that use the same scenario. For your convenience, the scenario is repeated In each question. Each question presents a different goal and answer choices, but the text of the scenario is the same in each question in this series.

You have a Microsoft SQL Server database that contains the following tables.

The Oder table contains more than one million rows.

The Store table has a relationship to the Monthy_returns table on the StoreID column. This is the only relationship between the tables.

You plan to use Power BI Desktop to create an analytics solution for the data.

You are modifying the model to report on the number of orders.

You need to calculate the number of orders.

What should you do?
A . Create a Calculated measure that uses the COUNTA(Order_ID) DAX formula.
B . Create a Calculated measure that uses the SUM(Order_ID) DAX formula.
C . Create a Calculated column that uses the SUM(Order_ID) DAX formula.
D . Create a Calculated measure that uses the COUNTA(Order_ID) DAX formula.

Answer: A