A. Modify the custom Payroll App policy by adding the certificate authentication type to the existing rules on Server1.
B. Use the custom Payroll App policy and issue an IPSec certificate from the internal CA to Server1.
C. Unassign the custom Payroll App policy and assign the default Server policy on Server1.
D. Unassign the custom Payroll App policy and assign the default Secure Server policy on Server1.