Question: Based on the current data in the above Staff table, which answer can be a candidate key? Based on the current data in the above

Based on the current data in the above Staff table, which answer can be a candidate key?
Based on the current data in the above Staff table, which answer can be a candidate key?
(sex, position)
(salary, brachno)
(sex, salary)
(sex, branchno)

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