Which syntax is appropriate for a self-join on the employees table? display a. select e1.ID, e1.Name as EmpName, e2.Name as ManagerName from employees inner join employees on ID = ID; b. select e1.ID, e1.Name as EmpName, e2.Name as ManagerName from employees as e1 and employees as e2 on e1.ID = e2.ID; c. select e1.ID, e1.Name as EmpName, e2.Name as ManagerName from employees as e1 inner join employees as e2 on e1.ID = e2.ID