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- 单项选择题 The EMPLOYEES table contains these columns:
You need to write a query that will produce these results: 1. Display the salary multiplied by the commission_pct. 2. Exclude employees with a zero commission_pct. 3. Display a zero for employees with a null commission value. Evaluate the SQL statement: 
What does the statement provide?（） A、All of the desired results
B、Two of the desired results
C、One of the desired results
D、An error statement
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