You write a Web service that uses Web Services Enhancements (WSE) 3.0 for security.
The Web service must support both the kerberosSecurity policy and the mutualCertificateSecurity policy.
Both policies have the same options set for encryption and signatures.
You need to ensure that the Web service can use either policy.

What should you do?

A.
Create two policy files:
one with the kerberosSecurity policy, and the other with the mutualCertificateSecurity policy.

B.
Create one policy file that contains a policy element for the kerberosSecurity policy and a policy element for the mutualCertificateSecurity policy.

C.
Create one policy file that contains a policy element, which contains a kerberosSecurity policy element and a mutualCertificateSecurity policy element.

D.
Create two policy files:
one with the Extensions element, and the other with a single policy element that contains both the kerberosSecurity policy element and the mutualCertificateSecurity policy element.