You are a database developer for your company. You are developing a report that will return the customer name and phone number. Customers might have a business number, a mobile number, and a fax…

You are a database developer for your company. You are developing a report that will return the customer name and phone number. Customers might have a business number, a mobile number, and a fax number. The report must return the first nonnull phone number for each customer. You need to write the query that returns the required customer information for the report. What should you use?