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What does the following relational operation perform? 1 , 2 , 3 , . . . a . It returns the results of table R

What does the following relational operation perform?

1, 2, 3, . . .

.

It returns the results of table R renaming the attributes

1, 2, 3, . . .

.

None of the mentioned c

.

It returns the results of table R with the previous attribute names d

.

It rename the table R

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