You manage 40 computers that run Microsoft Windows Vista. You use Microsoft Windows Calendar to publish a calendar to a shared network location. You need to allow users to automatically view the most recent calendar updates. What should you do？ （）
- AInstruct all users to configure a calendar subscription that has an update interval of 15 minutes.
- BInstruct all users to perform calendar synchronization for all shared calendar subscriptions.
- CInstruct all users to map a network drive to the folder that holds the shared calendar. Import the .ics file for the shared calendar.
- DUse e-mail messages to deploy the .ics file for the shared calendar to each user. Instruct each user to import the .ics file that is attached to the e-mail message.