You need to create the required relationship for the executive’s visual.
What should you do before you can create the relationship?
A . Change the data type of Sales[region_id] to Whole Number.
B . In the Sales table, add a measure for sum(sales_amount).
C . Change the data type of sales[sales_id] to Text.
D . Change the data type of sales [region_id] to Decimal Number.
Answer: C