A select deptname from employees where salary =max(salary)
B select deptname from employees where salary =max(salary) group by deptname
C select deptname from employees where salary = (select salary from employees group by salary)
D select deptname from employees where salary =(select max(salary) from employees)
E select deptname from employees where salary in (select salary from employees group by salary)
F select deptname from employees where max(salary) in (select salary from employees group by salary)