You have an Exchange Server 2010 organization.You need to ensure that a user can open a resource mailbox.What are two possible ways to achieve this goal？（）

A.From Microsoft Office Outlook， modify the properties of the resource mailbox.

B.From the Exchange Management Console， create a new sharing policy.

C.From the Exchange Management Shell， set the Resource Delegates parameter for the resource mailbox.

D.From the Active Directory Users and Computers console， reset the password for the account associated to the resource mailbox， and then provide the password to the user.