Map the following ER diagrams into the most efficient relational database schema: (ON) (1,1) Employee has Dependent Ename frame Bdate Select one: a. Employee (ssn, enamne). Dependent (fname, Bdate) O b. Employee (sn, ename), Dependent (frame, Bdate, employee san) c. Employee (son, ename), Dependent (name, Bdate), has (employee_ssn dependent fname) O d. Employee (ssn, ename dependent_fname). Dependent (fname, Edato)