Given the following table TABLE CUSTOMER Column Null? Туре CUS_ID NOT NULL NUMBER NAME VARCHAR2(50) CUS_PHONE VARCHAR2 (50) REGION_ID NUMBER The query that will return the number of regions which are assigned some customer is SELECT count( distinct region_id) FROM customer .a .b SELECT distinct count( distinct region_id) FROM customer .C SELECT distinct count(region_id) FROM customer SELECT countíregion id) FR OM.customer GROUP BY region id

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A: For example:

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A: Hello student Greetings Hope you are doing great Thank You!!!

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