You are attempting to connect to your ISP. You view the status change from Dialing to Verifying user name and password. After several seconds， the status changes to Disconnecting. You are then disconnected from the computer you dialed. You verify that your user name and password are entered correctly. You want to enable your Computer to connect to your ISP correctly. What should you do？ （）
- AConfigure your connection to enable data encryption.
- BConfigure your connection to use the UNIX SLIP server.
- CConfigure your connection to allow unsecured passwords.
- DInstruct your ISP to configure your account to support Multilink.