Answer please?

Notyetanswered Pointsout of 4,00 P Firgquestion grunt > mosthours = order emp by hours desc; and grunt > topEmp = limit mosthours 3 ; commands perform: a. order the emp relations according to hours field in descending order and limit their records to display the top 3 employees on the number of hours b. order the emp relation by hours and display the employee with the lowest number of hours c. order the emp relation starting from the lowest number of hours and limit the records to display 3 employees with the lowest number of hours d. order the emp relation by hours and constraint the records' display to a specific condition