Question: What does this expression mean? DepartmentNum Faverage ( salary ) ( Employee ) where F is an aggregate function Group of answer choices Average salary

What does this expression mean?
DepartmentNum Faverage(salary)(Employee)
where F is an aggregate function
Group of answer choices
Average salary of employees grouped by department
Average salary history for each employee
Sum of employee salary divided by departments
Departments with employees that have average salaries

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