10. On her first day of work, A filed an application for membership with Samahan ng Mga Magsasaging (SMM), the sole and exclusive bargaining agent of the plantation workers in XYZ Farms. But the union president, X, disapproved her application, claiming that she was not yet qualified to join the union in view of her probationary status. Did the union president validly disapprove A’s application? Reason(s).