An Organization Uses SSO Authentication for Employee Access to Network

An organization uses SSO authentication for employee access to network resources. When an employee resigns, as per the organization's security policy, the employee's access to all network resources is terminated immediately. Two weeks later, the former employee sends an email to the help desk for a password reset to access payroll information from the human resources server. Which of the following represents the BEST course of action?

A) Approve the former employee's request, as a password reset would give the former employee access to only the human resources server.
B) Deny the former employee's request, since the password reset request came from an external email address.
C) Deny the former employee's request, as a password reset would give the employee access to all network resources.
D) Approve the former employee's request, as there would not be a security issue with the former employee gaining access to network.