Jack wishes to give a user from another organization access to applications on his primary application server. Which of the following is the most secure way to allow this user Notes acccess?

A.
Cross-certify your application server id with his organization.

B.
Cross-certify your application server id with his user id file.

C.
Cross-certify your organization with his organizational unit.

D.
Cross-certify your organizational unit with his user id file.