Question: Based on the same relations from Question 1 , if the following RA operation is executed: The union of results obtained from Question 1 and

Based on the same relations from Question 1, if the following RA operation is executed:
The union of results obtained from Question 1 and the projection of city on P
Which data elements are in the results?
(Note: a new row in the result set is indicated by the "|" symbol in the answers options)

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