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For this question, use the track table in the PostgreSQL database for this course. Suppose you have written the following query: SELECT name, composer FROM

For this question, use the track table in the PostgreSQL database for this course.
Suppose you have written the following query:
SELECT name, composer FROM track;
The problem with it is that some records have a null value for composer.
How would you modify this query to insert Unknown into the composer column in place of null values?
launch database
A.)
SELECT name, composer,
COALESCE (composer, 'Unknown')
AS composer
FROM track;
B.)
SELECT name,
COALESCE (composer, 'Unknown')
AS composer
FROM track;
C.)
SELECT
COALESCE (composer, 'Unknown')
AS composer
FROM track;
D.)
SELECT name,
COALESCE composer, 'Unknown'
AS composer
FROM track;

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