You need to design an access control strategy for the financial data used by the accounting department. Your solution must meet business requirements. What should you do？（）

A. Modify the properties of the computer object named P_FS2 to enable the Trust computer for delegation attribute. Instruct accounting department users to use Encrypting File System （EFS） to encrypt files
B. Modify the properties of all accounting department user accounts to enable the Account is trusted for delegation attribute. Instruct accounting department users to use Encrypting File System （EFS） to encrypt files
C. Modify the properties of accounting department computers to enable the Trust computer for delegation attribute. Configure accounting department client computers to use IPSec to communicate with P_FS2
D. Modify the properties of all administrator accounts in the forest to enable to Account is trusted for delegation attribute. Configure accounting department client computers to use IPSec to communicate with P_FS2