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In the Sales database, phone numbers are frequently entered into the database incorrectly. You are tasked with ensuring that phone numbers are consistently entered as

In the Sales database, phone numbers are frequently entered into the database incorrectly. You are tasked with ensuring that phone numbers are consistently entered as (xxx)xxx-xxxx where the xs represent numbers and the other characters are exactly as shown. Your solution should provide the best possible performance. What do you do?

A. Use DML triggers to ensure the format is correct.

B. Use DDL triggers to ensure the format is correct.

C. Use a CHECK constraint to ensure the format is correct.

D. Use stored procedures to format the phone number before the INSERT or UPDATE

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