What should you implement?

You have a table named Products that contains information about the products that your company sells. The table contains many columns that do not always contain values.

You need to implement an ANSI standard method to convert the NULL values in the query output to the phrase "Not Applicable".

What should you implement?
A . the COALESCE function
B . a view
C . a table-valued function
D . the TRY PARSE function
E . a stored procedure
F . the ISNULL function
G . a scalar function
H . the TRY CONVERT function

Answer: F