Question: Which of the methods, commands, or functions listed below can be used to determine if there are blanks in a character field named emp _

Which of the methods, commands, or functions listed below can be used to determine if there are blanks in a character field named emp_no?
a.
OCCURS(emp_no,"")>0
b.
FIND("", emp_no)
c.
ISBLANK(emp_no)
d.
Run the Verify command
e.
Index the table, then scroll through the data to pick out the blank records

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