You work as the enterprise exchange administrator at Company.com.The Company.com network consists of a single Active Directory domain named Company.com.Company.com has an Exchange Server 2010 organization.A new Company.com policy prohibits the users from changing their password by using Outlook Web App （OWA）. What should you do？（）

• A、The best option is to set up an Outlook Web App Mailbox policy so that the users comply with the Company.com policy.
• B、The best option is to set up a Group Policy Object so that the users comply with the Company.com policy.
• C、The best option is to change the authentication settings of the OWA virtual directory so that the users comply with the Company.com policy.
• D、The best option is to change the authentication settings of the IISADMPWD virtual directory so that the users comply with the Company.com policy.