Option (1) is incorrect: It is not a valid ground to reject an application to sue as an indigent person.
Option (2) is incorrect: It is not a valid ground to reject an application to sue as an indigent person.
Option (3) is incorrect: It is not a valid ground to reject an application to sue as an indigent person.
Option (4) is correct: If any person has entered into an agreement with the applicant to finance the litigation, the court can reject an application to sue as an indigent person.