Question: Which of the following statements is correct? a. A table can contain a maximum of only one column marked as unused. b. You can delete

Which of the following statements is correct?
a. A table can contain a maximum of only one column marked as unused.
b. You can delete a table by removing all columns in the table.
c. Using the SET UNUSED clause allows you to free up storage space used by a column.
d. None of the above statements are correct.

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