Q. Find the ID, name, dept name, salary for instructors whose salary is greater than $80,000 .

• {t | t ε instructor ∧ t[salary] > 80000}
• Э t ∈ r (Q(t))
• {t | Э s ε instructor (t[ID] = s[ID]∧ s[salary] > 80000)}
• None of the mentioned

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